Trial Outcomes & Findings for The Application of Zishen Yutai Pill in Aged Women Undergoing IVF-ET (NCT NCT03703700)

NCT ID: NCT03703700

Last Updated: 2025-03-25

Results Overview

Live birth rate=Number of live birth / Paticipants randomized

• Recruitment status: COMPLETED
• Study phase: NA
• Target enrollment: 1467 participants
• Primary outcome timeframe: 1 year after embryo transfer day, up to a maximum duration of 58 weeks
• Results posted on: 2025-03-25

Participant Flow

Participant milestones

Measure	Zishen Yutai Pill Group Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Overall Study STARTED	734	733
Overall Study COMPLETED	419	409
Overall Study NOT COMPLETED	315	324

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

The Application of Zishen Yutai Pill in Aged Women Undergoing IVF-ET

Baseline characteristics by cohort

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Total n=1467 Participants Total of all reporting groups
Age, Continuous	37.25 years STANDARD_DEVIATION 1.80 • n=5 Participants	37.25 years STANDARD_DEVIATION 1.88 • n=7 Participants	37.25 years STANDARD_DEVIATION 1.84 • n=5 Participants
Age, Customized Between 35 and 37 years	425 Participants n=5 Participants	426 Participants n=7 Participants	851 Participants n=5 Participants
Age, Customized Between 38 and 39 years	213 Participants n=5 Participants	212 Participants n=7 Participants	425 Participants n=5 Participants
Age, Customized Between 40 and 42 years	96 Participants n=5 Participants	95 Participants n=7 Participants	191 Participants n=5 Participants
Sex: Female, Male Female	734 Participants n=5 Participants	733 Participants n=7 Participants	1467 Participants n=5 Participants
Sex: Female, Male Male	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants
Race/Ethnicity, Customized Asian	734 Participants n=5 Participants	733 Participants n=7 Participants	1467 Participants n=5 Participants
Weight	57.79 kilogram STANDARD_DEVIATION 7.76 • n=5 Participants	57.42 kilogram STANDARD_DEVIATION 7.51 • n=7 Participants	57.61 kilogram STANDARD_DEVIATION 7.64 • n=5 Participants
Height	159.40 centimeter STANDARD_DEVIATION 5.38 • n=5 Participants	159.14 centimeter STANDARD_DEVIATION 5.26 • n=7 Participants	159.27 centimeter STANDARD_DEVIATION 5.32 • n=5 Participants
Type of infertility Primary infertility	181 Participants n=5 Participants	171 Participants n=7 Participants	352 Participants n=5 Participants
Type of infertility Secondary infertility	545 Participants n=5 Participants	554 Participants n=7 Participants	1099 Participants n=5 Participants
Type of infertility Missing	8 Participants n=5 Participants	8 Participants n=7 Participants	16 Participants n=5 Participants
Duration of attempt to conceive	3.0 years n=5 Participants	4.0 years n=7 Participants	4.0 years n=5 Participants
Concomitant infertility factors Pelvic factors and tubal factors	519 participants n=5 Participants	542 participants n=7 Participants	1061 participants n=5 Participants
Concomitant infertility factors Endometriosis	22 participants n=5 Participants	13 participants n=7 Participants	35 participants n=5 Participants
Concomitant infertility factors Male factors	331 participants n=5 Participants	345 participants n=7 Participants	676 participants n=5 Participants
Concomitant infertility factors Unexplained factors	35 participants n=5 Participants	25 participants n=7 Participants	60 participants n=5 Participants
Concomitant infertility factors Ovulation disorder	78 participants n=5 Participants	96 participants n=7 Participants	174 participants n=5 Participants
Concomitant infertility factors Scar uterus	88 participants n=5 Participants	93 participants n=7 Participants	181 participants n=5 Participants
Concomitant infertility factors Obese/overweight	69 participants n=5 Participants	75 participants n=7 Participants	144 participants n=5 Participants
Concomitant infertility factors Diabetes	32 participants n=5 Participants	35 participants n=7 Participants	67 participants n=5 Participants
Previous IVF cycle 0	604 Participants n=5 Participants	591 Participants n=7 Participants	1195 Participants n=5 Participants
Previous IVF cycle 1	54 Participants n=5 Participants	71 Participants n=7 Participants	125 Participants n=5 Participants
Previous IVF cycle 2	48 Participants n=5 Participants	49 Participants n=7 Participants	97 Participants n=5 Participants
Previous IVF cycle ≥3	18 Participants n=5 Participants	12 Participants n=7 Participants	30 Participants n=5 Participants
Previous IVF cycle Missing	10 Participants n=5 Participants	10 Participants n=7 Participants	20 Participants n=5 Participants
Previous miscarriage	138 Participants n=5 Participants	148 Participants n=7 Participants	286 Participants n=5 Participants
BMI	22.72 kg/m^2 STANDARD_DEVIATION 2.61 • n=5 Participants	22.66 kg/m^2 STANDARD_DEVIATION 2.64 • n=7 Participants	22.69 kg/m^2 STANDARD_DEVIATION 2.62 • n=5 Participants
Antral follicular count (AFC)	11 Follicles n=5 Participants	11 Follicles n=7 Participants	11 Follicles n=5 Participants
Anti-Müllerian hormone (AMH)	2.10 ng/mL n=5 Participants	2.06 ng/mL n=7 Participants	2.09 ng/mL n=5 Participants
Estradiol (E2)	160.74 pmol/L n=5 Participants	159.61 pmol/L n=7 Participants	160.31 pmol/L n=5 Participants
follicular-stimulating hormone (FSH)	6.83 IU/L n=5 Participants	6.84 IU/L n=7 Participants	6.83 IU/L n=5 Participants
Luteinizing hormone (LH)	4.05 IU/L n=5 Participants	4.09 IU/L n=7 Participants	4.08 IU/L n=5 Participants
Prolactin (PRL)	281.85 mIU/L n=5 Participants	283.66 mIU/L n=7 Participants	282.17 mIU/L n=5 Participants
Testerone (T)	0.90 nmol/L n=5 Participants	0.94 nmol/L n=7 Participants	0.90 nmol/L n=5 Participants

PRIMARY outcome

Timeframe: 1 year after embryo transfer day, up to a maximum duration of 58 weeks

Population: ITT population

Live birth rate=Number of live birth / Paticipants randomized

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Live Birth Rate	171 Participants	139 Participants

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

The total number of oocytes retrieved through ultrasound-guided transvaginal aspiration.

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Number of Retrieved Oocytes	9 oocytes Interval 5.0 to 13.0	9 oocytes Interval 6.0 to 13.0

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

Rate of retrieved oocytes =Number of retrieved oocytes/Number of follicles with a diameter ≥10mm on the HCG injection day.

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Rate of Retrieved Oocytes	85.7 percentage of retrieved oocytes Interval 68.3 to 109.1	88.9 percentage of retrieved oocytes Interval 69.2 to 107.9

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

The number of oocytes with pronuclei or polar bodies observed on Day 1 after oocyte retrieval in IVF patients, or as the number of MII oocytes on the day of oocyte retrieval in ICSI patients.

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Number of Matured Oocytes Retrieved	8 oocytes Interval 5.0 to 11.0	7 oocytes Interval 4.0 to 11.0

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

Rate of mature oocytes = Number of mature oocytes/Number of retrieved oocytes

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Rate of Matured Oocytes	90.0 percentage of matured oocytes Interval 77.8 to 100.0	90.9 percentage of matured oocytes Interval 77.7 to 100.0

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

Number of fertilized oocytes that undergo cleavage on Day 2 after oocyte retrieval.

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Number of Cleavage	7 oocytes Interval 4.0 to 10.0	6 oocytes Interval 4.0 to 10.0

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

Cleavage rate=Number of all cleaved embryos/Number of fertilized oocytes (2PN+1PN+ multiple PN)

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Cleavage Rate	91.0 percentage of cleaved embryos Interval 70.0 to 100.0	90.0 percentage of cleaved embryos Interval 71.4 to 100.0

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

The sum of the number of embryos transferred and the number of embryos frozen.

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Number of Available Embryos	4 embryos Interval 2.0 to 5.0	3 embryos Interval 2.0 to 5.0

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

Rate of available embryos=Number of available embryos/Number of cleaved oocytes.

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Rate of Available Embryos	57.1 percentage of available embryos Interval 40.0 to 75.0	50.0 percentage of available embryos Interval 37.8 to 71.4

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

High-quality embryo will be defined according to the day of embryo transfer, following the Istanbul consensus and Gardner criteria, Day 2: 4 cells, cell fragments <10% and no multi-nucleus; Day 3: 8 cells, cell fragments <10%, no multi-nucleus; Day 5: stage 4 blastocyst, grade A inner cell mass, grade A trophectoderm (12,13).

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Number of High-quality Embryos	2 embryos Interval 0.0 to 4.0	2 embryos Interval 0.0 to 4.0

SECONDARY outcome

Timeframe: On embryo transfer day, approximately 6 weeks

Population: ITT population

Rate of high-quality embryos=Number of high-quality embryos/Number of available embryos

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Rate of High-quality Embryos	50.0 percentage of high-quality embryos Interval 0.0 to 100.0	50.0 percentage of high-quality embryos Interval 0.0 to 100.0

SECONDARY outcome

Timeframe: 14 days after ET day, approximately 8 weeks

Population: ITT population

Biochemical pregnancy rate=Number of positive pregnancy tests/Paticipants randomized

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Biochemical Pregnancy Rate	232 Participants	195 Participants

SECONDARY outcome

Timeframe: five weeks after ET day, approximately 11 weeks

Population: Number of embryos transferred

Implantation rate=Number of gestational sacs/Number of embryos transferred

Outcome measures

Measure	Zishen Yutai Pill Group n=700 embryos Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=667 embryos Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Implantation Rate	252 embryos	204 embryos

SECONDARY outcome

Timeframe: five weeks after ET day, approximately 11 weeks

Population: ITT population

The clinical pregnancy determined by the ultrasound, and Clinical pregnancy rate=Number of clinical pregnancies / Paticipants randomized

Outcome measures

Measure	Zishen Yutai Pill Group n=734 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Clinical Pregnancy Rate	216 Participants	177 Participants

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Population with serum β-HCG positive during pregnancy tests

Miscarriage Rate (among positive pregnancy test population) =Number of miscarriages / Number of biochemical pregnancy

Outcome measures

Measure	Zishen Yutai Pill Group n=232 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=195 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Miscarriage Rate (Among Positive Pregnancy Test Population)	57 Participants	51 Participants

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Population with intrauterine gestation sac with fetal motion under transvaginal ultrasonography

Miscarriage rate (among clinical pregnancy population)=Number of miscarriages / Number of clinical pregnancies

Outcome measures

Measure	Zishen Yutai Pill Group n=216 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=177 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Miscarriage Rate (Among Clinical Pregnancy Population)	45 Participants	38 Participants

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Newborns (145 singletons and 26 pairs of twins in Zishen Yutai pill group, 117 singletons and 22 pairs of twins in placebo group)

By checking medical records

Outcome measures

Measure	Zishen Yutai Pill Group n=197 Neonates Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=161 Neonates Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
The Birth Weight of the Newborn Singleton	3250.0 gram Interval 2972.5 to 3542.5	3260.0 gram Interval 3000.0 to 3600.0
The Birth Weight of the Newborn Twin	2450.0 gram Interval 2150.0 to 2600.0	2275.0 gram Interval 2085.0 to 2595.0

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Newborns (145 singletons and 26 pairs of twins in Zishen Yutai pill group, 117 singletons and 22 pairs of twins in placebo group)

By checking medical records

Outcome measures

Measure	Zishen Yutai Pill Group n=197 Neonates Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=161 Neonates Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
The Birth Height of the Newborn Singleton	50.0 centimeter Interval 50.0 to 50.0	50.0 centimeter Interval 50.0 to 50.0
The Birth Height of the Newborn Twin	48.0 centimeter Interval 47.0 to 49.0	48.0 centimeter Interval 45.0 to 49.0

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Participants who had live birth

Delivery of a fetus at less than 37 and more than 28 weeks gestational age.

Outcome measures

Measure	Zishen Yutai Pill Group n=171 Participants Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=139 Participants Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Preterm Delivery Among Live Birth	29 Participants	22 Participants

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Newborns (145 singletons and 26 pairs of twins in Zishen Yutai pill group, 117 singletons and 22 pairs of twins in placebo group)

Neonatal birth weight ≤ 2500 g.

Outcome measures

Measure	Zishen Yutai Pill Group n=197 Neonates Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=161 Neonates Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Low Birth Weight Among Neonates	24 Neonates	18 Neonates

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Newborns (145 singletons and 26 pairs of twins in Zishen Yutai pill group, 117 singletons and 22 pairs of twins in placebo group)

Congenital anomalies are defined as structural or functional anomalies that occur during intrauterine life, including minor and major anomalies.

Outcome measures

Measure	Zishen Yutai Pill Group n=197 neonates Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=161 neonates Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Congenital Anomalies Among Neonates	1 neonates	2 neonates

SECONDARY outcome

Timeframe: 1 year after embryo transfer, up to 58 weeks

Population: Newborns (145 singletons and 26 pairs of twins in Zishen Yutai pill group, 117 singletons and 22 pairs of twins in placebo group)

NICU, neonate intensive care unit.

Outcome measures

Measure	Zishen Yutai Pill Group n=197 neonates Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=161 neonates Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Neonates Entering NICU	5 neonates	2 neonates

Adverse Events

Zishen Yutai Pill Group

Serious events: 22 serious events

Other events: 0 other events

Deaths: 0 deaths

Placebo Group

Serious events: 18 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Measure	Zishen Yutai Pill Group n=734 participants at risk Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Zishen Yutai Pill: Patients who undergo the long-term protocol will start taking Zishen Yutai Pill on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Zishen Yutai Pill on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.	Placebo Group n=733 participants at risk Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug. Placebo: Patients who undergo the long-term protocol will start taking Placebo on the day of pituitary suppression, 5g three times a day (Stopping on the first 1-4 days of menstruation), and patients who undergo the antagonist protocol will start taking Placebo on the 19th to 23rd day of the previous menstruation cycle, 5g three times a day (Stopping on the first 1-4 days of menstruation). The drug will be taken till 2 weeks after transplantation. If the test result is confirmed as biochemical pregnancy (HCG\>50 IU/L), patients continue to take pills till 3 weeks after the clinical pregnancy determined by the ultrasound. If it is determined that the pregnancy test is negative, stop the drug.
Endocrine disorders Ovarian hyperstimulation syndrome	0.54% 4/734 • Number of events 4 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events	0.82% 6/733 • Number of events 6 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events
Pregnancy, puerperium and perinatal conditions Miscarriage	5.2% 12/232 • Number of events 12 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events	3.6% 7/195 • Number of events 7 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events
Pregnancy, puerperium and perinatal conditions Ectopic pregnancy	1.7% 4/232 • Number of events 4 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events	2.6% 5/195 • Number of events 5 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events
Congenital, familial and genetic disorders Cryptorchidism	0.51% 1/197 • Number of events 1 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events	0.00% 0/161 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events
Surgical and medical procedures Appendectomy	0.14% 1/734 • Number of events 1 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events	0.00% 0/733 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events
Congenital, familial and genetic disorders Congenital atrial septal defect	0.51% 1/197 • Number of events 1 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events	0.00% 0/161 • From enrollment until 1 year after ET, up to 58 weeks maternal and neonatal adverse events

Other adverse events

Adverse event data not reported

Additional Information

Dr. Dongzi Yang

Center for Reproductive Medicine, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University

Phone: 8602081332233

Email: yangdz@mail.sysu.edu.cn

Results disclosure agreements

• Principal investigator is a sponsor employee
• Publication restrictions are in place