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Fluvoxamine for Early Treatment of Covid-19 (Stop Covid 2)

Fluvoxamine for Early Treatment of Covid-19: a Fully-remote, Randomized Placebo Controlled Trial

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04668950
Enrollment
670
Registered
2020-12-16
Start date
2020-12-22
Completion date
2021-09-28
Last updated
2022-10-31

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

Conditions

Coronavirus, Covid19

Keywords

fluvoxamine

Brief summary

The purpose of this research study is to determine if a drug called fluvoxamine can be used early in the course of the COVID-19 infection to prevent more serious complications like shortness of breath. Fluvoxamine is an anti-depressant drug approved by the FDA for the treatment of obsessive-compulsive disorder. The use of fluvoxamine for the treatment of COVID-19 is considered investigational, which means the US Food and Drug Administration has not approved it for this use. This study is fully-remote, which means that there is no face-to-face contact; study materials including study drug will be shipped to participants' houses. People around the United States and Canada can participate.

Detailed description

The investigators will randomize approximately 880 participants, age 30 and older, who have tested tested positive for COVID-19 and are currently experiencing mild symptoms. People around the United States and Canada can participate. All interactions for this study will be conducted remotely by videoconferencing, email, or phone. Screening: All participants will first complete a pre-screen to see if they may be eligible for the study. Once a participant is confirmed eligible and consented, the study team will send the study materials. These materials will consist of study medication and self-monitoring equipment, including an oxygen saturation monitor, blood pressure monitor, and thermometer. RCT: Participants will be randomly assigned (1:1) to take either fluvoxamine or a placebo. This phase of the study will last approximately 15 days and is double-blinded. Participants will take up to 100mg of fluvoxamine or placebo by mouth twice a day for a daily total of 200mg. Participants will continue this dose for approximately 15 days. Depending on tolerability, the dose may be adjusted. Participants will also complete short 5 minute assessments daily to report the results of self-monitoring (including oxygen level, blood pressure, and temperature), a shortness of breath rating and any adverse events. Follow-up Phase: The study team will follow participants for approximately 90 days after the end of the randomized phase. If needed, the study team will review medical records to determine the clinical course of participants.

Interventions

DRUGFluvoxamine

Up to 200mg per day (2 capsules per day) as tolerated, for approximately 15 days

DRUGPlacebo

Will take 2 capsules per day as tolerated for approximately 15 days

Sponsors

Covid-19 Early Treatment Fund
CollaboratorOTHER
McGill University
CollaboratorOTHER
Cures Within Reach
CollaboratorOTHER
Washington University School of Medicine
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
30 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Men and woman age 30 and older; 2. Not currently hospitalized 3. Proven SARS-CoV-2 positive (per lab or physician report). 4. Currently symptomatic with one or more of the following symptoms: fever, cough, myalgia, mild dyspnea, chest pain, diarrhea, nausea, vomiting, anosmia (inability to smell), ageusia (inability to taste), sore throat, nasal congestion. 5. Able to provide informed consent. 6. Upon initial screening, participant reports one of the following risk factors for clinical deterioration: age≥40, racial/ethnic group African-American, Hispanic, or Native American (including more than one race), or 1+ of the following medical conditions which increase risk for developing moderate-severe COVID illness: obesity, hypertension, diabetes, heart disease (coronary artery disease, history of myocardial infarction, or heart failure), lung disease (eg asthma, COPD), immune disorder (eg rheumatoid arthritis, lupus).

Exclusion criteria

1. Illness severe enough to require hospitalization or already meeting study's primary endpoint for clinical worsening (eg current O2 saturation \<92% on room air, current use of supplemental oxygen to maintain O2 saturation ≥92%). 2. Unstable medical comorbidities (eg decompensated cirrhosis), per patient report and/or medical records. 3. Immunocompromised from the following: solid organ transplant, BMT, high dose steroids (\>20mg prednisone per day), or tocilizumab 4. Already enrolled in another COVID 19 medication trial (not including vaccination or prophylaxis trials) 5. Unable to provide informed consent 6. Unable to perform the study procedures 7. Taking donepezil (rationale: donepezil is a S1R agonist), or sertraline (rationale: sertraline is a strong sigma-1 antagonist). 8. Taking warfarin-also known as Coumadin (rationale: increased risk of bleeding), phenytoin (rationale: fluvoxamine inhibits its metabolism), clopidogrel (rationale: fluvoxamine inhibits its metabolism from pro-drug to active drug which raises risk of cardiovascular events), and St John's wort (rationale: fluvoxamine + St John's wort are considered contraindicated because of the risk of serotonin syndrome) 9. Taking SSRIs, SNRIs, or tricyclic antidepressants, unless these are at a low dose such that a study investigator concludes that a clinically significant interaction with fluvoxamine (ie either serotonin syndrome or TCA overdose) is unlikely (examples: participant takes escitalopram but only at 5-10mg daily; that dose plus 200mg fluvoxamine would be insufficient to cause serotonin syndrome; or, participant takes amitriptyline but only at 25mg nightly; even if fluvoxamine inhibits its metabolism, it would be an insufficient dose to cause QTc prolongation or problematic side effects). 10. Individuals who report they have bipolar disorder or are taking medication for bipolar disorder (lithium, valproate, high-dose antipsychotic), unless the investigator concludes that the risk for mania is unlikely (ie it is doubtful that the patient actually has bipolar disorder). 11. Individuals who take alprazolam or diazepam and are unwilling to cut the medication by 25% (rationale: fluvoxamine modestly inhibits the metabolism of these drugs). 12. Participants taking theophylline, tizanidine, clozapine, or olanzapine (drugs with a narrow therapeutic index that are primarily metabolized by CYP 1A2, which is inhibited by fluvoxamine) will be reviewed with a study investigator and excluded unless the investigator concludes that the risk to the participant is low (this would be unlikely; example: participant takes tizanidine only as needed and is willing to avoid it for the 15 days of the study). 13. Received vaccine for COVID-19.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Clinical DeteriorationRCT-approximately 15 daysDefined as the number of participants who experienced the following: both of the following: 1)Presence of dyspnea and/or hospitalization for shortness of breath or pneumonia, 2)) decrease in O2 saturation (\<92% on room air) and/or supplemental oxygen requirement to keep O2 saturation ≥92%).

Countries

Canada, United States

Participant flow

Participants by arm

ArmCount
Fluvoxamine
Start fluvoxamine 50mg capsule once, then 100mg twice daily. May reduce dose for tolerability reasons. Will be followed in the RCT for approximately 15 days. Fluvoxamine: Up to 200mg per day (2 capsules per day) as tolerated, for approximately 15 days
272
Placebo
Start placebo one capsule, twice daily. May reduce dose for tolerability reasons. Will be followed in RCT for approximately 15 days. Placebo: Will take 2 capsules per day as tolerated for approximately 15 days
275
Total547

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyCould not confirm baseline status62
Overall StudyCould not confirm started study medication1515
Overall StudyDeteriorated at or before baseline assessment69
Overall StudyDrop out and did not start medication1517
Overall StudyOther24
Overall StudyStarted medication more than 7 days after symptom onset1814

Baseline characteristics

CharacteristicPlaceboFluvoxamineTotal
Age, Customized
Age
48 years
STANDARD_DEVIATION 9.83
48 years
STANDARD_DEVIATION 10.18
48 years
STANDARD_DEVIATION 10
Body Mass Index category (BMI)
25-29.9
90 Participants86 Participants176 Participants
Body Mass Index category (BMI)
Greater than or equal to 30
123 Participants115 Participants238 Participants
Body Mass Index category (BMI)
Less than 25
62 Participants71 Participants133 Participants
Coexisting conditions
Active cancer
1 Participants0 Participants1 Participants
Coexisting conditions
Asthma
33 Participants40 Participants73 Participants
Coexisting conditions
Diabetes
28 Participants23 Participants51 Participants
Coexisting conditions
Heart disease
4 Participants4 Participants8 Participants
Coexisting conditions
Hepatitis B/C
1 Participants1 Participants2 Participants
Coexisting conditions
HIV
4 Participants1 Participants5 Participants
Coexisting conditions
Hypertension
62 Participants55 Participants117 Participants
Coexisting conditions
Immune disorder
4 Participants14 Participants18 Participants
Coexisting conditions
Kidney disease
2 Participants1 Participants3 Participants
Coexisting conditions
Liver disease
1 Participants1 Participants2 Participants
Coexisting conditions
Lung disease
2 Participants2 Participants4 Participants
Coexisting conditions
Other medical conditions
54 Participants42 Participants96 Participants
Coexisting conditions
Thyroid problem
27 Participants20 Participants47 Participants
Duration of Covid-19 symptoms4.8 days
STANDARD_DEVIATION 1.52
5 days
STANDARD_DEVIATION 1.44
4.9 days
STANDARD_DEVIATION 1.49
Ethnicity (NIH/OMB)
Hispanic or Latino
37 Participants35 Participants72 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
236 Participants234 Participants470 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants3 Participants5 Participants
Most severe COVID-19 symptom at baseline
Body aches
30 Participants27 Participants57 Participants
Most severe COVID-19 symptom at baseline
Chills
10 Participants9 Participants19 Participants
Most severe COVID-19 symptom at baseline
Cough
37 Participants34 Participants71 Participants
Most severe COVID-19 symptom at baseline
Diarrhea
9 Participants8 Participants17 Participants
Most severe COVID-19 symptom at baseline
Fatigue
59 Participants70 Participants129 Participants
Most severe COVID-19 symptom at baseline
Loss of appetite
26 Participants21 Participants47 Participants
Most severe COVID-19 symptom at baseline
Loss of smell
91 Participants74 Participants165 Participants
Most severe COVID-19 symptom at baseline
Loss of taste
48 Participants47 Participants95 Participants
Most severe COVID-19 symptom at baseline
Nasal congestion
30 Participants45 Participants75 Participants
Most severe COVID-19 symptom at baseline
Nausea
4 Participants11 Participants15 Participants
Most severe COVID-19 symptom at baseline
Shortness of breath
7 Participants6 Participants13 Participants
Most severe COVID-19 symptom at baseline
Sore throat
7 Participants8 Participants15 Participants
Most severe COVID-19 symptom at baseline
Subjective fever
18 Participants12 Participants30 Participants
Race/Ethnicity, Customized
American Indian/Alaskan Native
8 Participants6 Participants14 Participants
Race/Ethnicity, Customized
Asian
5 Participants8 Participants13 Participants
Race/Ethnicity, Customized
Black/African American
23 Participants22 Participants45 Participants
Race/Ethnicity, Customized
Native Hawaiian/Pacific Islander
5 Participants4 Participants9 Participants
Race/Ethnicity, Customized
Other (identified as other)
21 Participants29 Participants50 Participants
Race/Ethnicity, Customized
South Asian
2 Participants3 Participants5 Participants
Race/Ethnicity, Customized
Unknown/Not reported
22 Participants17 Participants39 Participants
Race/Ethnicity, Customized
White/Caucasian
201 Participants197 Participants398 Participants
Sex: Female, Male
Female
170 Participants169 Participants339 Participants
Sex: Female, Male
Male
105 Participants103 Participants208 Participants
SPO296.8 mmHg
STANDARD_DEVIATION 13.5
96.8 mmHg
STANDARD_DEVIATION 12.7
96.8 mmHg
STANDARD_DEVIATION 1.7

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 2720 / 275
other
Total, other adverse events
15 / 2725 / 275
serious
Total, serious adverse events
13 / 27212 / 275

Outcome results

Primary

Number of Participants With Clinical Deterioration

Defined as the number of participants who experienced the following: both of the following: 1)Presence of dyspnea and/or hospitalization for shortness of breath or pneumonia, 2)) decrease in O2 saturation (\<92% on room air) and/or supplemental oxygen requirement to keep O2 saturation ≥92%).

Time frame: RCT-approximately 15 days

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
FluvoxamineNumber of Participants With Clinical Deterioration13 Participants
PlaceboNumber of Participants With Clinical Deterioration15 Participants

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026