Trial Outcomes & Findings for Efficacy and Safety of Enisamium Iodide for the Treatment of Acute Respiratory Viral Infections, Including Influenza. (NCT NCT04682444)

NCT ID: NCT04682444

Last Updated: 2026-01-08

Results Overview

Count of participants WITHOUT objective symptoms -- overall. Objective symptoms of acute respiratory viral infection (ARVI), including influenza, were monitored: fever, pharyngeal hyperemia, rhinitis, arterial blood pressure, enlarged lymph nodes, auscultation findings for lung and heart. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza. A score system used to assess participants' health. A higher score implies worse outcome. Objective symptoms scores were: normal or abnormal blood pressure: 0 or 4 score points; lung auscultation: 0 points; vesicular breath sound and wheezing or crepitation 2 or 4 points, respectively; clear and rhythmic heart sounds -- each 0 points; noisy and arrhythmic heart sounds -- each 2 score points.

Recruitment status

COMPLETED

Study phase

PHASE2/PHASE3

Target enrollment

100 participants

Primary outcome timeframe

Day 0 (baseline), 3, 7, 14.

Results posted on

2026-01-08

Participant Flow

Participant milestones

Participant milestones
Measure
Group 1 - Active Treatment
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Overall Study
STARTED
60
40
Overall Study
COMPLETED
60
40
Overall Study
NOT COMPLETED
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Efficacy and Safety of Enisamium Iodide for the Treatment of Acute Respiratory Viral Infections, Including Influenza.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Group 1 - Active Treatment
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Total
n=100 Participants
Total of all reporting groups
Age, Continuous
37.0 years
n=18 Participants
37.6 years
n=17 Participants
37.20 years
n=35 Participants
Sex: Female, Male
Female
38 Participants
n=18 Participants
26 Participants
n=17 Participants
64 Participants
n=35 Participants
Sex: Female, Male
Male
22 Participants
n=18 Participants
14 Participants
n=17 Participants
36 Participants
n=35 Participants
Region of Enrollment
Russia
60 participants
n=18 Participants
40 participants
n=17 Participants
100 participants
n=35 Participants
Body Mass Index
24.4 kg/m^2
n=18 Participants
25.3 kg/m^2
n=17 Participants
24.7 kg/m^2
n=35 Participants

PRIMARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Count of participants WITHOUT objective symptoms -- overall. Objective symptoms of acute respiratory viral infection (ARVI), including influenza, were monitored: fever, pharyngeal hyperemia, rhinitis, arterial blood pressure, enlarged lymph nodes, auscultation findings for lung and heart. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza. A score system used to assess participants' health. A higher score implies worse outcome. Objective symptoms scores were: normal or abnormal blood pressure: 0 or 4 score points; lung auscultation: 0 points; vesicular breath sound and wheezing or crepitation 2 or 4 points, respectively; clear and rhythmic heart sounds -- each 0 points; noisy and arrhythmic heart sounds -- each 2 score points.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Objective Symptoms -- Overall
Study Day 3:
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Objective Symptoms -- Overall
Study Day 0:
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Objective Symptoms -- Overall
Study Day 7:
9 Participants
4 Participants
Efficacy: Number of Participants -- Absence of Objective Symptoms -- Overall
Study Day 14:
44 Participants
11 Participants

PRIMARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Count of participants who had days WITHOUT routine activities. Disability to perform routine tasks and activities were reported by the participants to the investigator at each study visit.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Days Without Routine Activities -- Summary
2 days disability
12 Participants
9 Participants
Efficacy: Number of Participants -- Days Without Routine Activities -- Summary
> 2 days disability
2 Participants
15 Participants
Efficacy: Number of Participants -- Days Without Routine Activities -- Summary
0 days disability
26 Participants
6 Participants
Efficacy: Number of Participants -- Days Without Routine Activities -- Summary
1 day disability
20 Participants
10 Participants

PRIMARY outcome

Timeframe: Day 0 (baseline), 3, 7.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Viral antigens that were evaluated: adenovirus, corona virus, influenza A, influenza B, parainfluenza virus, respiratory syncytial virus. Virus antigens were isolated from nasal swabs and detected by using validated immunofluorescence staining methods. Efficacy assessment was based on the determination of viral antigen on treatment days (Day 3 and Day 7) compared with the baseline (Day 0) in the active treatment group and the placebo group. Results represent the count of participants who did NOT have detectable viral antigens.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Viral Antigens -- Overall
Day 0 Patients who had no detectable viral antigens
3 Participants
4 Participants
Efficacy: Number of Participants -- Viral Antigens -- Overall
Day 3 Patients who had no detectable viral antigens
42 Participants
10 Participants
Efficacy: Number of Participants -- Viral Antigens -- Overall
Day 7 Patients who had no detectable viral antigens
59 Participants
33 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention to treat

Count of participants WITHOUT overall subjective symptoms. Subjective symptoms of acute respiratory viral infection (ARVI) including influenza, that were monitored: elevated body temperature, chills, cough, headache, myalgia, sore throat, weakness. Evaluate the number of participants in the treatment and the placebo groups without the subjective symptoms from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of ARVI, including influenza. The subjective symptoms were assessed using a 4-point Likert scale, ranging from score 1 (absent symptoms ) to score 4 (severe symptoms).

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptoms -- Overall
Study Day 0:
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptoms -- Overall
Study Day 3:
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptoms -- Overall
Study Day 7:
9 Participants
1 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptoms -- Overall
Study Day 14:
57 Participants
18 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Subjective symptom sum score. Subjective symptoms of acute respiratory viral infection (ARVI) including influenza, that were monitored: elevated body temperature, chills, cough, headache, myalgia, sore throat, weakness. The subjective symptoms were assessed using a 4-point Likert scale for the individual assessment of the severity of the above 7 symptoms, ranging from absent (0), mild (1), moderate (2), or severe (3). A higher score implies worse outcome.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Subjective Symptom Sum Score (4-point Likert Scale)
Study Day 0:
15.7 score on a 4-point Likert scale
Interval 11.0 to 19.0
15.4 score on a 4-point Likert scale
Interval 11.0 to 18.0
Efficacy: Subjective Symptom Sum Score (4-point Likert Scale)
Study Day 3:
11 score on a 4-point Likert scale
Interval 8.0 to 15.0
11.9 score on a 4-point Likert scale
Interval 9.0 to 17.0
Efficacy: Subjective Symptom Sum Score (4-point Likert Scale)
Study Day 7:
8.4 score on a 4-point Likert scale
Interval 7.0 to 12.0
9.6 score on a 4-point Likert scale
Interval 7.0 to 14.0
Efficacy: Subjective Symptom Sum Score (4-point Likert Scale)
Study Day 14:
7.1 score on a 4-point Likert scale
Interval 7.0 to 10.0
8.0 score on a 4-point Likert scale
Interval 7.0 to 13.0

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Chills. Count of participants WITHOUT the subjective symptom: chills. Evaluate the number of participants in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Chills
Study Day 0: Chills
55 Participants
38 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Chills
Study Day 3: Chills
60 Participants
40 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Chills
Study Day 7: Chills
60 Participants
40 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Chills
Study Day 14: Chills
60 Participants
40 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Cough. Count of participants WITHOUT the subjective symptom: cough. Evaluate the number of participants in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Cough
Study Day 0: Cough
1 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Cough
Study Day 3: Cough
2 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Cough
Study Day 7: Cough
22 Participants
3 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Cough
Study Day 14: Cough
57 Participants
19 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Count of participants WITHOUT perceived elevated body temperature. Evaluate the number of patients in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Elevated Body Temperature
Study Day 0: Patients without perceived elevated body temperature
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Elevated Body Temperature
Study Day 3: Patients without perceived elevated body temperature
44 Participants
23 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Elevated Body Temperature
Study Day 7: Patients without perceived elevated body temperature
60 Participants
37 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Elevated Body Temperature
Study Day 14: Patients without perceived elevated body temperature
60 Participants
39 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Subjective symptoms. Count of participants WITHOUT the subjective symptom: sore throat. Evaluate the number of patients in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Sore Throat
Study Day 0: Sore throat
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Sore Throat
Study Day 3: Sore throat
15 Participants
7 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Sore Throat
Study Day 7: Sore throat
39 Participants
19 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Sore Throat
Study Day 14: Sore throat
59 Participants
35 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Subjective symptoms. Count of participants WITHOUT the subjective symptom: headache. Evaluate the number of patients in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Headache
Study Day 0: Headache
4 Participants
6 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Headache
Study Day 3: Headache
29 Participants
15 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Headache
Study Day 7: Headache
54 Participants
27 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Headache
Study Day 14: Headache
60 Participants
37 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Myalgia. Count of participants WITHOUT the subjective symptom: myalgia. Evaluate the number of participants in the active treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Myalgia
Study Day 0: Myalgia
28 Participants
26 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Myalgia
Study Day 3: Myalgia
59 Participants
37 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Myalgia
Study Day 7: Myalgia
60 Participants
40 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Myalgia
Study Day 14: Myalgia
60 Participants
40 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Subjective symptoms. Count of participants WITHOUT the subjective symptom: weakness. Evaluate the number of participants in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, relating to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Weakness
Study Day 3: Weakness
18 Participants
1 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Weakness
Study Day 0: Weakness
1 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Weakness
Study Day 7: Weakness
41 Participants
18 Participants
Efficacy: Number of Participants -- Absence of Subjective Symptom -- Weakness
Study Day 14: Weakness
58 Participants
33 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Efficacy: Count of participants WITHOUT objective symptom: Body temperature. Evaluate the number of patients in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. A score system was used to assess patient health, as described under endpoint #1.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Objective Symptom -- Body Temperature
Study Day 14
60 Participants
39 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Body Temperature
Study Day 0
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Body Temperature
Study Day 3
44 Participants
23 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Body Temperature
Study Day 7
60 Participants
37 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Body temperature. Count of participants in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Clinical improvement was assessed by the investigator, with respect to the severity of clinical symptoms of acute respiratory viral infection (ARVI), including influenza.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 0 · >38.1
1 Participants
3 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 0 · 37.6-38.0
26 Participants
12 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 0 · 37.1-37.5
33 Participants
25 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 0 · 36.6-37-0
0 Participants
0 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 3 · >38.1
0 Participants
0 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 3 · 37.6-38.0
0 Participants
1 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 3 · 37.1-37.5
16 Participants
16 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 3 · 36.6-37-0
44 Participants
23 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 7 · >38.1
0 Participants
0 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 7 · 37.6-38.0
0 Participants
0 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 7 · 37.1-37.5
0 Participants
3 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 7 · 36.6-37-0
60 Participants
37 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 14 · >38.1
0 Participants
0 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 14 · 37.6-38.0
0 Participants
0 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 14 · 37.1-37.5
0 Participants
1 Participants
Efficacy: Number of Participants -- Objective Symptom: Body Temperature -- Body Temperature Ranges
Study Day 14 · 36.6-37-0
60 Participants
39 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Efficacy: Count of participants WITHOUT objective symptom: Lungs auscultation (abnormal breath sounds, detected using a stethoscope). Evaluate the number of patients in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. A score system was used to assess patient health, as described under endpoint #1.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Objective Symptom -- Lungs Auscultation
Study Day 0
0 Participants
1 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Lungs Auscultation
Study Day 3
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Lungs Auscultation
Study Day 7
44 Participants
12 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Lungs Auscultation
Study Day 14
15 Participants
5 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Efficacy: Number of participants WITHOUT objective Symptom: Pharyngeal Hyperemia. Evaluate the number of participants in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. A score system was used to assess patient health, as described under endpoint #1.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Absence of Objective Symptom -- Pharyngeal Hyperemia
Study Day 0
0 Participants
0 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Pharyngeal Hyperemia
Study Day 3
5 Participants
1 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Pharyngeal Hyperemia
Study Day 7
35 Participants
19 Participants
Efficacy: Number of Participants -- Absence of Objective Symptom -- Pharyngeal Hyperemia
Study Day 14
59 Participants
33 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Pharyngeal hyperemia. Count of participants in the treatment and the placebo groups regarding clinical status from Day 3 after therapy start. Severity was assessed by the investigator, using a 4-point score scale: 0 = absent; 1 = mild; 2 = moderate; 3 = severe.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 0 · Mild
8 Participants
4 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 7 · Mild
24 Participants
19 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 3 · Mild
44 Participants
25 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 14 · Severe
0 Participants
0 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 14 · Absent
59 Participants
33 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 0 · Absent
0 Participants
0 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 0 · Moderate
51 Participants
36 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 0 · Severe
1 Participants
0 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 3 · Absent
5 Participants
1 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 3 · Moderate
11 Participants
14 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 3 · Severe
0 Participants
0 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 7 · Absent
35 Participants
19 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 7 · Moderate
1 Participants
2 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 7 · Severe
0 Participants
0 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 14 · Mild
1 Participants
7 Participants
Efficacy Objective Symptom: Number of Participants -- Pharyngeal Hyperemia -- Severity
Study Day 14 · Moderate
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Objective clinical sum score. Objective symptoms of acute respiratory viral infection (ARVI), were monitored. For the objective clinical sum score, clinical status was assessed by the investigator, relating to the severity of clinical symptoms of ARVI, including influenza. A score system (score points) that was used to assess participants' health, was based on objective symptoms scores, shown below. * Blood pressure: normal=0 points; abnormal=4 points. * Lung auscultation: vesicular breath sound=0 points; wheezing=2 points; crepitation=4 points. * Heart sound; clear heart sounds=0 points; rhythmic heart sounds=0 points; noisy heart sounds=2 points; arrhythmic heart sounds=2 points. A higher score implies worse clinical outcome.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Objective Clinical Sum Score
Study Day 0:
9.53 score
Standard Error 0.09
9.65 score
Standard Error 0.17
Efficacy: Objective Clinical Sum Score
Study Day 3:
7.37 score
Standard Error 0.09
7.83 score
Standard Error 0.15
Efficacy: Objective Clinical Sum Score
Study Day 7:
6.02 score
Standard Error 0.13
6.48 score
Standard Error 0.16
Efficacy: Objective Clinical Sum Score
Study Day 14:
4.55 score
Standard Error 0.12
5.60 score
Standard Error 0.17

SECONDARY outcome

Timeframe: Day 0 (baseline).

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Count of randomised participants and their viral antigen types at baseline. Viral antigens evaluated: adenovirus, corona virus, influenza A (and subtypes), influenza B, parainfluenza virus, respiratory syncytial virus. Virus antigens were isolated from nasal swabs and detected by using validated immunofluorescence staining methods.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
Adenovirus (Mono)
8 Participants
8 Participants
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
Parainfluenza (Mono)
4 Participants
1 Participants
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
influenza A (H1N1)
12 Participants
9 Participants
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
Influenza A (H3N2)
14 Participants
8 Participants
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
Influenza B
7 Participants
5 Participants
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
Influenza A and Adenovirus (Combination of antigens)
10 Participants
4 Participants
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
Respiratory syncytial virus (Mono)
2 Participants
1 Participants
Efficacy: Number of Participants -- Viral Antigens -- Baseline Status
Non-differentiated acute respiratory viral infection (ARVI)
3 Participants
4 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Count of participants who did NOT have a detectable viral antigen -- influenza Type A Virus antigen was isolated from nasal swabs and detected by using validated immunofluorescence staining methods. Efficacy assessment was the determination of viral antigen on treatment days (Day 3 and Day 7) compared with the baseline (Day 0) in the active treatment group and the placebo group.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=26 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=17 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type A
Day 0 Patients who had no detectable viral antigen
0 Participants
0 Participants
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type A
Day 3 Patients who had no detectable viral antigen
20 Participants
3 Participants
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type A
Day 7 Patients who had no detectable viral antigen
25 Participants
16 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Viral antigen: Count of participants who did NOT have detectable viral antigen -- influenza Type A or Type B. Virus antigen was isolated from nasal swabs and detected by using validated immunofluorescence staining methods. Efficacy assessment was the determination of viral antigen on treatment days (Day 3 and Day 7) compared with the baseline (Day 0) in the active treatment group and the placebo group.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=33 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=22 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type A or Type B
Day 0 Patients who had no detectable viral antigens
0 Participants
0 Participants
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type A or Type B
Day 3 Patients who had no detectable viral antigens
25 Participants
5 Participants
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type A or Type B
Day 7 Patients who had no detectable viral antigens
32 Participants
20 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Viral antigen: Number of participants who did NOT have detectable viral antigen -- influenza Type B. Virus antigen was isolated from nasal swabs and detected by using validated immunofluorescence staining methods. Efficacy assessment was the determination of viral antigen on treatment days (Day 3 and Day 7) compared with the baseline (Day 0) in the active treatment group and the placebo group.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=7 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=5 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type B
Day 0 Patients who had no detectable viral antigen
0 Participants
0 Participants
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type B
Day 3 Patients who had no detectable viral antigen
5 Participants
2 Participants
Efficacy: Number of Participants -- Viral Antigen -- Influenza Type B
Day 7 Patients who had no detectable viral antigen
7 Participants
4 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Viral antigen: Count of participants who did NOT have detectable viral antigen -- Adenovirus. Virus antigen was isolated from nasal swabs and detected by using validated immunofluorescence staining methods. Efficacy assessment was the determination of viral antigen on treatment days (Day 3 and Day 7) compared with the baseline (Day 0) in the active treatment group and the placebo group.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=8 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=8 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Viral Antigen -- Adenovirus
Day 0 Patients who had no detectable viral antigen
0 Participants
0 Participants
Efficacy: Number of Participants -- Viral Antigen -- Adenovirus
Day 3 Patients who had no detectable viral antigen
5 Participants
1 Participants
Efficacy: Number of Participants -- Viral Antigen -- Adenovirus
Day 7 Patients who had no detectable viral antigen
8 Participants
5 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 3, 7.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Viral antigen: Count of participants who did NOT have detectable viral antigen -- viral antigen combination. Virus antigens were isolated from nasal swabs and detected by using validated immunofluorescence staining methods. Efficacy assessment was the determination of viral antigen on treatment days (Day 3 and Day 7) compared with the baseline (Day 0) in the active treatment group and the placebo group.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=10 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=4 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Efficacy: Number of Participants -- Viral Antigen -- Viral Antigen Combination
Day 0 Patients who had no detectable viral antigens
0 Participants
0 Participants
Efficacy: Number of Participants -- Viral Antigen -- Viral Antigen Combination
Day 3 Patients who had no detectable viral antigens
5 Participants
0 Participants
Efficacy: Number of Participants -- Viral Antigen -- Viral Antigen Combination
Day 7 Patients who had no detectable viral antigens
10 Participants
2 Participants

SECONDARY outcome

Timeframe: Day 0 (baseline), 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Assessment of the immune status was performed by evaluating the concentration in blood serum of immunoglobulin A (IgA), immunoglobulin M (IgM), immunoglobulin G (IgG). Determination of IgA, IgM, and IgG was performed by turbidimetry.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 0, IgG
12.247 grams/liter
Standard Error 0.384
11.383 grams/liter
Standard Error 0.336
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 7, IgA
2.209 grams/liter
Standard Error 0.129
2.303 grams/liter
Standard Error 0.136
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 7, IgM
1.525 grams/liter
Standard Error 0.112
1.315 grams/liter
Standard Error 0.104
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 7, IgG
12.175 grams/liter
Standard Error 0.397
11.423 grams/liter
Standard Error 0.345
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 14, IgA
2.238 grams/liter
Standard Error 0.131
2.296 grams/liter
Standard Error 0.136
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 14, IgM
1.552 grams/liter
Standard Error 0.113
1.400 grams/liter
Standard Error 0.109
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 14, IgG
12.388 grams/liter
Standard Error 0.395
11.753 grams/liter
Standard Error 0.390
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 0, IgM
1.442 grams/liter
Standard Error 0.093
1.338 grams/liter
Standard Error 0.104
Safety - Laboratory Parameters - Immune Status -- Immunoglobulin A, M, G
Day 0, IgA
2.157 grams/liter
Standard Error 0.117
2.273 grams/liter
Standard Error 0.140

SECONDARY outcome

Timeframe: Day 0 (baseline), 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Assessment of the immune status was performed by evaluating the concentration in blood serum of IFN-alpha and IFN-gamma. Determination of interferon alpha (INF-alpha) and interferon gamma (INF-gamma) in human blood serum was carried out using flow cytometer.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Safety - Laboratory Parameters -- Immune Status -- Interferon Alpha (IFN-alpha), Interferon Gamma (IFN-gamma)
Day 0, IFN-alpha
22.290 picograms/mL
Standard Error 1.264
22.541 picograms/mL
Standard Error 1.676
Safety - Laboratory Parameters -- Immune Status -- Interferon Alpha (IFN-alpha), Interferon Gamma (IFN-gamma)
Day 7, IFN-gamma
44.670 picograms/mL
Standard Error 0.765
30.478 picograms/mL
Standard Error 0.694
Safety - Laboratory Parameters -- Immune Status -- Interferon Alpha (IFN-alpha), Interferon Gamma (IFN-gamma)
Day 14, IFN-alpha
30.072 picograms/mL
Standard Error 1.123
29.388 picograms/mL
Standard Error 1.592
Safety - Laboratory Parameters -- Immune Status -- Interferon Alpha (IFN-alpha), Interferon Gamma (IFN-gamma)
Day 0, IFN-gamma
33.168 picograms/mL
Standard Error 0.912
33.008 picograms/mL
Standard Error 1.280
Safety - Laboratory Parameters -- Immune Status -- Interferon Alpha (IFN-alpha), Interferon Gamma (IFN-gamma)
Day 7, IFN-alpha
37.563 picograms/mL
Standard Error 1.308
31.768 picograms/mL
Standard Error 1.345
Safety - Laboratory Parameters -- Immune Status -- Interferon Alpha (IFN-alpha), Interferon Gamma (IFN-gamma)
Day 14, IFN-gamma
41.313 picograms/mL
Standard Error 0.770
30.393 picograms/mL
Standard Error 0.892

SECONDARY outcome

Timeframe: Day 3, 7, 14.

Population: Intention-to-treat. All randomized patients who received at least one dose of study medication.

Overall treatment efficacy. Evaluate the overall efficacy of the treatment by the investigator and by the participants. Results show the number of participants for each assessed category of the health status.

Outcome measures

Outcome measures
Measure
Group 1 - Active Treatment - Amizon
n=60 Participants
Patient who were randomized into Group 1 ingested Amizon tablets 500 mg (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 250 mg of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 500 mg) 3 times a day, for 7 days. Each tablet contains 250 mg of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 Participants
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 500 mg (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 500 mg (2 tablets), 3 times a day, for 7 days.
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Investigator · Moderate improve
0 Participants
3 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Patient · Worsened
0 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Investigator · Moderate improve
7 Participants
8 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Investigator · Complete recovery
12 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Investigator · Worsened
0 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Patient · Moderate improve
0 Participants
3 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Patient · No significant change
0 Participants
3 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Investigator · Complete recovery
0 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Investigator · Significant improve
39 Participants
9 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Investigator · Moderate improve
21 Participants
28 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Investigator · No significant change
0 Participants
3 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Investigator · Worsened
0 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Patient · Complete recovery
0 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Patient · Significant improve
36 Participants
6 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Patient · Moderate improve
24 Participants
31 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 3: Patient · No significant change
0 Participants
3 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Investigator · Significant improve
40 Participants
30 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Investigator · No significant change
1 Participants
2 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Patient · Complete recovery
11 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Patient · Significant improve
42 Participants
27 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Patient · Moderate improve
6 Participants
10 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Patient · No significant change
1 Participants
3 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 7: Patient · Worsened
0 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Investigator · Complete recovery
56 Participants
13 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Investigator · Significant improve
4 Participants
21 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Investigator · No significant change
0 Participants
3 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Investigator · Worsened
0 Participants
0 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Patient · Complete recovery
56 Participants
13 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Patient · Significant improve
4 Participants
21 Participants
Evaluation Health Status: Number of Participants -- Overall Treatment Efficacy (Assessment by Investigator and by Patient)
Day 14: Patient · Worsened
0 Participants
0 Participants

Adverse Events

Group 1 - Active Treatment

Serious events: 0 serious events
Other events: 4 other events
Deaths: 0 deaths

Group 2 - Placebo

Serious events: 0 serious events
Other events: 3 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Group 1 - Active Treatment
n=60 participants at risk
Patient who were randomized into Group 1 ingested Amizon tablets 0.5 g (2 tablets) after a meal, 3 times a day, for 7 days; each tablet contains 0.25 g of enisamium iodide. Enisamium Iodide: Patients ingested Amizon tablets without chewing, after meal, as follows: 2 tablets (total dose 0.5 g) 3 times a day, for 7 days. Each tablet contains 0.25 g of Nmethyl-4-N-methyl-4-benzylcarbamidopyridinium iodide (INN enisamium iodide).
Group 2 - Placebo
n=40 participants at risk
Patient who were randomized into Group 2 ingested placebo tablets after a meal, at the dose 0.5 g (2 tablets), 3 times a day, for 7 days. Placebo: Patients ingested placebo tablets without chewing, after meal, in the dose 0.5 g (2 tablets), 3 times a day, for 7 days.
Gastrointestinal disorders
Bitter taste in mouth
3.3%
2/60 • Number of events 2 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
2.5%
1/40 • Number of events 1 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
Gastrointestinal disorders
Heartburn
1.7%
1/60 • Number of events 1 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
0.00%
0/40 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
Gastrointestinal disorders
Burning sensation
1.7%
1/60 • Number of events 1 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
0.00%
0/40 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
Respiratory, thoracic and mediastinal disorders
Acute respiratory disease
0.00%
0/60 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
2.5%
1/40 • Number of events 1 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
Nervous system disorders
Headache
0.00%
0/60 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
2.5%
1/40 • Number of events 1 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
Skin and subcutaneous tissue disorders
Allergic rash
0.00%
0/60 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
5.0%
2/40 • Number of events 2 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
Gastrointestinal disorders
Toothache
0.00%
0/60 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.
5.0%
2/40 • Number of events 2 • From the study start (Day 0), throughout the study treatment (7 days), and up to the follow-up study visit (Day 14).
Adverse event (AE) was defined as any effect (unfavourable from medical viewpoint) that was experienced by a study subject exposed to the investigational drug, irrespective of its relatedness to study drug.

Additional Information

Clinical Enquiry Manager

Farmak

Phone: + 38 (067) 464-28-27

Results disclosure agreements

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