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Efficacy of Combination Therapy of Fluvoxamine and Favipiravir versus Favipiravir Monotherapy to Prevent Severe COVID-19 among Mild to Moderate COVID-19 Patients: Open-label Randomized Controlled Trial

Effect of Combined Fluvoxamine with Favipiravir versus Favipiravir Monotherapy in Prevention of Clinical Deterioration among mild to moderate COVID-19 patients Monitoring by Telemedicine in Virtual Clinic: Open-label Randomized Controlled Trial

Status
Active, not recruiting
Phases
Phase 2Phase 3
Study type
Interventional
Source
TCTR
Registry ID
TCTR20210615002
Enrollment
296
Registered
2021-06-15
Start date
2021-06-26
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

confirmed cases of COVID-19 from SARS-CoV-2 PCR fluvoxamine, COVID-19, SARS-CoV-2, favipiravir

Interventions

Treatment in mild COVID19, the loading dose of oral favipiravir 3600 mg in the initial day, then 1600 mg per days for 4 days (total 5 days), and fluvoxamine 100 mg per day for 10 days ,Treatment in mi
Active Comparator Drug,Sham Comparator Drug,Active Comparator Drug,Sham Comparator Drug
Fluvoxamine and favipiravir ,Favipiravir,Fluvoxamine and favipiravir and dexamethasone,Favipiravir and dexamethasone

Sponsors

Chulabhorn Royal Academy
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1) Thai people with age equal or more than 18-year-old 2) Confirmed COVID-19 with 1 or more of the following symptoms; fever, runny nose, cough, myalgia, sore throat, dyspnea, chest discomfort, or chest pain within 7 days after onset of illness 3) Asymptomatic COVID-19 4) Accept to perform chest CT 5) Communicable with staff in Thai 6) Accept the follow-up schedule 7) Nasopharyngeal swab or oropharyngeal swab detected ORF1 a/b gene E gene from SARS-CoV-2 PCR with Ct value less than 35 8) No meet WHO criteria for hospitalization 9) Accept the informed consent

Exclusion criteria

Exclusion criteria: 1) Respiratory tract symptoms compatible with a bacterial infection 2) Previous receiving anti-SARS-CoV-2 agents; an example of favipiravir, remdisevir, protease inhibitors within 24 hours 3) Complete coronavirus vaccination more than 2 weeks 4) History of favipiravir or fluvoxamine allergy 5) Need oxygen therapy 6) Previous use of immunosuppressive agents within 6 months; a corticosteroid, azathioprine, mycophenolate mofetil, cyclosporin, JAK inhibitor 7) Cannot home quarantine 8) Unable to receive enteral nutrition 9) Dyspnea or oxygen desaturation less than 95 on the initial day 10) Respiratory rate more than 30 per minute or BP less than 90/60 or alteration of consciousness (GCS less than 15) 11) Exercise-induced desaturation more than 3% 12) Multiorgan failure or respiratory failure 13) Chest CT presented infiltration of more than 50% of total lung volume (including pure GGOs) or presence of consolidation, crazy paving pattern, or ARDS pattern 14) Severe illness or critical illness followed Gandhi severity score 15) CURB-65 score more than 2, Pneumonia Severity Index more than 90 16) WHO clinical progression scale more than 5 or Brescia-COVID Respiratory Severity Scale (BCRSS) more than 2, or COVID-19 Severity Index more than 8, Quick COVID-19 Severity Index (qCSI) less than 1 17) Modified Centor score more than 2 18) Pregnancy or breastfeeding 19) Terminal illness; end-stage COPD, heart failure, end-stage renal disease, cirrhosis child C 20) Taking medication that had drug interaction with fluvoxamine 20.1) CYP1A2 substrate: agomelatine, tizanidine, aminophylline, theophylline, clozapine, caffeine, melatonin, propranolol 20.2) CYP2C19substrate - cilostazol, melatonin - fosphenytoin, phenytoin, voriconazole - clopidogrel - serotonergic drugs - linezolid, rasagiline, selegiline - antidepressants ex. sertraline, mirtazapine, amitriptyline - triptans and ergots derivertives; sumatriptan, ergotamine - lithium - opioids; morphine, tramadol - thioridazine - warfarin - alprazolam, diazepam - cyproheptadine 21) Taking the antibiotics, anti-inflammatory drug, NSAIDs, or herb within 48 hours 22) Depression or suicidal idea 23) Glaucoma 24) Receiving chemotherapy 25) Organ transplantation 26) Evidence of any respiratory viral infection other than coronavirus

Design outcomes

Primary

MeasureTime frame
Clinical deterioration in mild COVID-19 day 5 VAS score,Clinical deterioration in moderate COVID-19 (pneumonia) day 5 VAS score

Secondary

MeasureTime frame
Duration from initial treatment to clinical deterioration along study days,the changing of inflammatory marker day 0, 2, 5, 14 laboratory data,Resolution or progression of pneumonia from chest CT or chest X-ray day 5 resolution/ progression,Changing of virological end-point Day 0, 5 ,14 Ct value,Change in GAD-7 and PHQ-9 day 0, 7, 14 GAD-7, PHQ-9,Adverse events anytime descriptive of grading of AE reports,Seroprevalence Day 0, 14 nucleocapsid antibodM, IgGy Ig

Countries

Thailand

Contacts

Public ContactTaweegrit Siripongboonsitti

Chulabhorn Hospital, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy

taweegrit.sir@pccms.ac.th66816924872

Outcome results

None listed

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