Skip to content

Famotidine Outpatient COVID-19 Treatment Study

Famotidine Use in Non-hospitalized Patients With COVID-19: A Case Series

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04389567
Enrollment
10
Registered
2020-05-15
Start date
2020-05-12
Completion date
2020-05-25
Last updated
2023-05-06

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

Conditions

COVID-19

Keywords

Famotidine

Brief summary

A retrospective case series of patients who self-medicated with Famotidine during coronavirus disease 2019 (COVID-19). The study will collect de-identified patient reported outcome measures of patients with confirmed COVID-19 who self-medicated with Famotidine at any dose during the period of illness. Data will be collected by questionnaire and telephone interview. Inclusion criteria: Age\>18; Ability to give written informed consent for study participation; Confirmed diagnosis of COVID-19; Use of Famotidine at any dose during period of COVID-19 illness

Detailed description

Famotidine is a histamine-2 receptor antagonist, widely available over-the-counter, and is safely used for suppression of gastric acid production over a wide range of doses from 20mg once daily to 160mg four times daily. In computer-based simulations, Famotidine has been identified as a potential inhibitor of the 3-chymotrypsin-like protease (3CLpro). In a propensity score matched retrospective cohort study a significantly reduced risk for death or intubation (adjusted hazard ratio 0.43, 95% confidence interval 0.21-0.88) was identified for patients with COVID-19 who were taking Famotidine before or at the point of hospital admission. Some individuals have self-medicated with Famotidine while being outpatients with COVID-19. This study is aimed at collecting patient reported outcome measures from such individuals.

Interventions

DRUGFamotidine

Use of oral Famotidine.

Sponsors

Cold Spring Harbor Laboratory
CollaboratorOTHER
Northwell Health
Lead SponsorOTHER

Study design

Observational model
CASE_ONLY
Time perspective
RETROSPECTIVE

Eligibility

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

Inclusion criteria

Age \>18 years; Ability to give written informed consent; Confirmed COVID-19 diagnosis; Famotidine use during COVID-19 illness

Exclusion criteria

none

Design outcomes

Primary

MeasureTime frameDescription
Symptomatic improvement2 weeksSymptoms assessed by severity scores on an ordinal scale; 1=not affected to 4= severely affected

Secondary

MeasureTime frameDescription
Peripheral blood oxygen saturation2 weeksOxygen saturation determined by pulse oximetry

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026