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ClinicalTrials.gov public records Last synced Sep 29, 2026, 12:54 PM EDT

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Showing 25–28 of 4 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Nirmatrelvir Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug-Drug Interaction Study Assessing Effect of Carbamazepine on PF-07321332 Boosted With Ritonavir

NCT04962230
View directory record Official record
Conditions
Healthy Participant
Interventions
PF 07321332/ritonavir, Carbamazepine
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 60 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 9, 2023 · Synced Sep 29, 2026, 12:54 PM EDT
Recruiting Phase 3 Interventional

EPIC-Peds: A Study to Learn About the Study Medicine Called PF-07321332 (Nirmatrelvir)/Ritonavir in Patients Under 18 Years of Age With COVID-19 That Are Not Hospitalized But Are at Risk for Severe Disease

NCT05261139
View directory record Official record
Conditions
COVID-19
Interventions
nirmatrelvir, ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
0 Years to 17 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
50
States / cities
Phoenix, Arizona • Los Angeles, California • Washington D.C., District of Columbia + 32 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2025 · Synced Sep 29, 2026, 12:54 PM EDT
Completed Phase 2Phase 3 Interventional Results available

A Study of a Potential Oral Treatment to Prevent COVID-19 in Adults Who Are Exposed to Household Member(s) With a Confirmed Symptomatic COVID-19 Infection

NCT05047601
View directory record Official record
Conditions
COVID-19
Interventions
PF-07321332, Placebo for PF-07321332, Placebo for Ritonavir, Ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
2,954 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
64
States / cities
Pelham, Alabama • Tucson, Arizona • Fullerton, California + 36 more
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 29, 2026, 12:54 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study to Estimate the Effects of Hepatic Impairment on the Pharmacokinetics (PK) of PF-07321332

NCT05005312
View directory record Official record
Conditions
Hepatic Impairment
Interventions
PF-07321332, Ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
2
States / cities
Tustin, California • Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced Sep 29, 2026, 12:54 PM EDT