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ClinicalTrials.gov public records Last synced Sep 19, 2026, 2:32 PM EDT

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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: PF-07321332 Dose 4 Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

STUDY OF PF-07321332 IN HEALTHY PARTICIPANTS

NCT04756531
View directory record Official record
Conditions
Healthy Participants
Interventions
PF-07321332 Dose 1, PF-07321332 Dose 2, PF-07321332 Dose 3, PF-07321332 Dose 4, PF-07321332 Dose 5, PF-07321332 Dose 4 or Placebo (Fed)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 60 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 14, 2024 · Synced Sep 19, 2026, 2:32 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Relative Bioavailability Study of 4 Different Formulations of PF-07321332 Relative to the Commercial Tablet Formulation

NCT05263895
View directory record Official record
Conditions
Bioavailability
Interventions
PF-07321332/ritonavir, PF-07321332
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 10, 2025 · Synced Sep 19, 2026, 2:32 PM EDT
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 19, 2026, 2:32 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 19, 2026, 2:32 PM EDT