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Favipiravir versus molnupiravir for COVID-19

A randomized open-label trial to compare the efficacy and safety of favipiravir and molnupiravir in adults with mild to moderate COVID-19 and increased risk of disease severity

Status
Active, not recruiting
Phases
Phase 2Phase 3
Study type
Interventional
Source
TCTR
Registry ID
TCTR20230111009
Enrollment
980
Registered
2023-01-11
Start date
2022-07-08
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Covid-19 Virological confirmation of SARS-CoV-2 infection Covid-19 SARS-CoV-2 molnupiravir favipiravir outpatients

Interventions

800 mg (4 capsules) taken orally twice a day (BID) for 5 days,9 tablets two times on Day 1, then 4 tablets twice a day from Day 2 to 5. Favipiravir treatment is extended (same dosing) to 10 days if cl
- In case of body weight more than 90 kg: 12 tablets two times on Day 1, then 5 tablets twice a day from Day 2 to 5.
Molnupiravir,Favipiravir

Sponsors

National Science and Technology Development Agency (NSTDA)
Lead Sponsor
Department of Medical Services (DMS)
Collaborator

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Age equal to 18 years or more Initial onset of signs/symptoms attributable to COVID-19 for 5 days or less prior to the day of randomization At least 1 sign/symptom attributable to COVID-19 on the day of randomization Mild or moderate COVID-19 (non severe COVID-19) Positive SARS-CoV-2 RT-PCR or antigenic test (ATK) for 5 days or less (if enrollment based on ATK test result, specimen collection is needed for further confirmation with RT-PCR) At least 1 underlying medical condition associated with an increased risk of severe illness from COVID-19 among the following conditions: - Age equal to 60 years or more - Asthma, mild, moderate to severe - Bronchiectasis (thickening of the lungs airways) - Bronchopulmonary dysplasia (chronic lung disease affecting newborns) - Chronic obstructive pulmonary disease (COPD), including emphysema and chronic bronchitis - Pulmonary embolism - Pulmonary hypertension - Previous pulmonary tuberculosis (after recovery) - Current smoking - Major thalassemia - Hypertension - Coronary heart disease - Chronic kidney disease (CKD) - Chronic liver disease (including cirrhosis CHILD class A (well-compensated disease) or class B (significant functional compromise) if no risk of study treatment toxicity - Hepatocellular carcinoma if no risk of study treatment toxicity - Cancer - Diabetes (type 1 or type 2) - HIV infection - Congenital immunocompromised conditions - Condition or medications that weaken their immune system (i.e., current corticoid treatment) - Body Mass index (BMI) equal to 30 kg/m2 or more - Recent Pregnancy if not breastfeeding - Alcohol or other substance use disorders, if not likely to affect adherence

Exclusion criteria

Exclusion criteria: - Currently hospitalized or expected to need hospitalization for COVID-19 within 48 hours of randomization - Patient with pulmonary involvement as defined in the protocol - Use of monoclonal antibodies planned at time of randomization - Active tuberculosis - Recent stroke or cerebrovascular disease which affects blood flow to the brain - For women: pregnancy, breastfeeding or unwillingness to use contraception during the intervention period and for at least one week after completion of the study treatment - For men: unwillingness to use a reliable method of birth control (contraception) during study treatment with molnupiravir and for at least 3 months after the last dose - Dialysis or estimated glomerular filtration rate <30 ml/min per 1.73 m2 - Hypersensitivity or other contraindication to the drugs - Any condition for which, in the opinion of the investigator, participation would not be in the best interest of the participant or that could prevent, limit, or confound the protocol-specified assessments including but not limited to, participants who are not expected to survive longer than 48 hours after randomization, or participants with a recent history of mechanical ventilation, or participants with conditions that could limit gastrointestinal absorption of the study treatment. Examples: patient who recently started chemotherapy, or chronic use of antacid.

Design outcomes

Primary

MeasureTime frame
Pulmonary involvement By Day 29 after enrollment Clinical and imaging

Secondary

MeasureTime frame
Hospitalization By Day 29 after enrollment Yes or no,Death By Day 29 after enrollment Follow up,Sustained clinical recovery By Day 29 after enrollment Symptom Diary and Telephone interview,Nasopharyngeal SARS-CoV-2 antigenic detection Day 15, Day 29 Antigenic test ,Safety endpoints By Day 29 after enrollment life-threatening adverse events (AE); treatment-related AEs interfering with social with social or functional activities; AE leading to premature treatment discontinuation; serious AE

Countries

Thailand

Contacts

Public ContactPrasert Auewarakul

Siriraj Hospital Faculty of Medicine

prasert.aue@mahidol.ac.th024197068

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026