CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 597 enrolled
Drug / intervention
Tecovirimat Oral Capsule +1 moredrug
Likely dose
Tecovirimat Oral Capsule 200 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05559099
NCT05559099Phase 2Completed

A Randomized, Placebo-controlled, Double-blinded Trial of the Safety and Efficacy of Tecovirimat for the Treatment of Adult and Pediatric Patients With Monkeypox Virus Disease

National Institute of Allergy and Infectious Diseases (NIAID)·interventional·Posted Sep 29, 2022·Updated Oct 9, 2025

In Brief

A Phase 2 clinical trial evaluating Tecovirimat Oral Capsule and Placebo for Monkeypox. Completed, enrolled 597 participants across 2 sites.

Detailed Summary

The purpose of this study is to find out if tecovirimat is a safe and effective drug to treat monkeypox (mpox) in combination with standard of care (SOC). Participants will be randomly assigned to receive oral tecovirimat plus SOC or placebo plus SOC for 14 days.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsMonkeypox
CountriesDemocratic Republic of the Congo

Timeline

Phase 2CompletedFinished
2023202420252026
First PostedSep 29, 2022
Enrollment StartOct 10, 2022
Primary CompletionSep 3, 2024
TodayJul 2, 2026
Enrollment to primary: 1.9 yearsPosted 3.8 years ago

Interventions

Tecovirimat Oral Capsuledrug

200 mg capsules Number of capsules and frequency of dosage will be based on participant weight: * ≥120 kg: three capsules three times a day (total daily tecovirimat dose: 1,800 mg) * 40 to \<120 kg: three capsules twice a day (total daily tecovirimat dose: 1,200 mg) * 25 to \<40 kg: two capsules twice a day (total daily tecovirimat dose: 800 mg) * 13 to \<25 kg: one capsule twice a day (total daily tecovirimat dose: 400 mg) * 6 to \<13 kg: ½ the contents of a capsule twice daily (total daily tecovirimat dose: 200 mg) * 3 to \<6 kg: ¼ the contents of a capsule twice daily (total daily tecovirimat dose: 100 mg)

Placebodrug

Capsules to match tecovirimat