External Mastalgia-oil Versus Placebo in Premenopausal Women With Severe Mastalgia

NCT ID: NCT06966245

Last Updated: 2026-02-02

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE3
• Total Enrollment: 190 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-06-08
• Study Completion Date: 2027-12-01

Brief Summary

This is a single-center, double-blind, randomized clinical trial to explore the efficacy and safety of external mastalgia-oil versus placebo in premenopausal women with severe mastalgia.

Conditions

Mastalgia

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

External mastalgia-oil

Group Type: EXPERIMENTAL

mastalgia-oil

Intervention Type: DRUG

External mastalgia-oil 1 ml/d per breast for 3 consecutive menstrual cycles

Mastalgia-oil placebo

Group Type: PLACEBO_COMPARATOR

Mastalgia-oil placebo

Intervention Type: DRUG

External mastalgia-oil placebo 1 ml/d per breast for 3 consecutive menstrual cycles

Interventions

mastalgia-oil

External mastalgia-oil 1 ml/d per breast for 3 consecutive menstrual cycles

Intervention Type: DRUG

Mastalgia-oil placebo

External mastalgia-oil placebo 1 ml/d per breast for 3 consecutive menstrual cycles

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Premenopausal females aged ≥ 18 years old
• Pre-existing regular menstrual cycle (28 ± 5 days) with mastalgia lasting for at least 6 consecutive menstrual cycles; with severe mastalgia [visual analog scale (VAS) score ≥ 4 for at least 7 days] and without chest wall pain in the baseline menstrual cycle (nonmedicated menstrual cycle)
• With breast ultrasound: BI-RADS classification 1-3; if mammography is required: also BI-RADS classification 1-3
• Willingness to follow up and complete required tests; ability to complete questionnaires independently or with assistance
• Willingness to use effective contraception (vaginally administered estrogen and hormone-coated IUDs are permitted) prior to study entry, during study participation, and for three months after discontinuation of the drug; negative pregnancy test in females of childbearing potential
• Requisite laboratory values:white blood cell count: ≥ 4.0 × 10^9/L, absolute neutrophil count: ≥ 2 × 10^9/L, platelet count: ≥ 100 × 10^9/L; hemoglobin: ≥ 110 g/L; aspartate aminotransferase and alanine aminotransferase: ≤ upper limit of normal, alkaline phosphatase: ≤ upper limit of normal, blood total bilirubin: ≤ upper limit of normal; serum creatinine and blood urea nitrogen: ≤ upper limit of normal

Exclusion Criteria

• With suspected breast disease (e.g., mastitis, malignant breast tumor) other than breast pain or benign breast cysts, or with other malignant tumors
• Use of hormonal medications (e.g., oral contraceptives, glucocorticoids, etc.), sex hormone modulators (SERMS, AIs, SERDs, etc.), B vitamins, essential oils, nonsteroidal anti-inflammatory drugs, or higher pain relievers in the past 3 months; use of tamoxifen or analogs in the past 6 months
• Prior history of breast surgery (including minimally invasive surgery), history of malignancy, or history of thromboembolism within the last 5 years (history of varicose veins and superficial phlebitis allowed)
• Smokers; essential oils or placebo systemic/skin sensitization
• With serious primary diseases of the heart, liver, kidneys and hematopoietic system, or mental illness, etc.
• Accompanied by skin damage on the breast that destroys the stratum corneum (e.g., eczema, ulcers)
• Serious or uncontrolled infections that may interfere with study treatment or assessment of study results, including but not limited to active hepatitis viral infection, human immunodeficiency virus antibody positivity, syphilis spirochete antibody positivity with evidence of active infection, and pulmonary infections
• Subjects who are breastfeeding or pregnant at the time of screening (of childbearing age and with serum human chorionic gonadotropin test results higher than the reference value); subjects of childbearing age who have had unprotected sex with a heterosexual partner within 2 weeks prior to the screening; subjects of childbearing age who are planning to prepare for conception, become pregnant, breastfeed, or donate their eggs during the test period or within 3 months of the end of the test; and those with implanted breasts
• Decrease in total breast pain score by more than 25% during the placebo lead-in cycle. These patients will not receive subsequent randomization and treatment.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: No

Sponsors

Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University

OTHER

Sponsor Role: lead

Responsible Party

Chang Gong

Clinical Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University

Guangzhou, , China

Site Status: RECRUITING

Countries

China

Central Contacts

Chang Gong, Prof

Role: CONTACT

gchang@mail.sysu.edu.cn

02034070499

Facility Contacts

Chang Gong, Prof

Role: primary

gchang@mail.sysu.edu.cn

02034070499

References

Kumar S, Rai R, Das V, Kumar S, Dwivedi V, Agrawal GG. Visual analogue scale for assessing breast nodularity in non-discrete lumpy breasts: the Lucknow-Cardiff breast nodularity scale. Breast. 2010 Jun;19(3):238-42. doi: 10.1016/j.breast.2010.02.002. Epub 2010 Mar 11.

Reference Type: BACKGROUND

PMID: 20223665 (View on PubMed)

Other Identifiers

Relief

Identifier Type: -

Identifier Source: org_study_id