Nirmatrelvir
Sponsors
Pfizer Inc., Helse Bergen HF, University of Oxford, Pfizer, Stanford University
Conditions
COVID-19Child, HospitalizedCoronavirus Disease 2019 (COVID-19)Healthy ParticipantsHospitalizationImmunocompromisedLong COVIDPost-acute Sequelae of SARS-CoV-2 Infection
Phase 1
A Study to Learn About the Study Medicine (Nirmatrelvir Plus Ritonavir) in Pregnant Women With COVID-19
TerminatedNCT05386472
Start: 2022-06-22End: 2025-05-12Updated: 2025-07-29
A Study to Learn About the Medicine (PF-07321332 or Nirmatrelvir/Ritonavir) in Healthy Lactating Women
CompletedNCT05441215
Start: 2022-12-12End: 2023-12-15Updated: 2024-04-03
Phase 2
Finding Treatments for COVID-19: A Trial of Antiviral Pharmacodynamics in Early Symptomatic COVID-19 (PLATCOV)
RecruitingNCT05041907
Start: 2021-09-30End: 2027-01-01Target: 3800Updated: 2026-02-19
A Study to Learn About the Study Medicines (Nirmatrelvir Plus Ritonavir) in People Aged 12 Years or Older With COVID-19 and a Compromised Immune System
CompletedNCT05438602
Start: 2022-08-03End: 2023-11-13Updated: 2024-09-23
A Study to Learn About the Medicine Called Nirmatrelvir Used in Combination With Ritonavir in People With Weakened Immune Systems or at Increased Risk for Poor Outcomes Who Are Hospitalized Due to Severe COVID-19
WithdrawnNCT05545319
Start: 2022-12-13End: 2024-01-06Updated: 2023-03-01
A Study to Learn About a Repeat 5-Day Treatment With the Study Medicines (Called Nirmatrelvir/Ritonavir) in People 12 Years Old or Older With Return of COVID-19 Symptoms and SARS-CoV-2 Positivity After Finishing Treatment With Nirmatrelvir/Ritonavir
CompletedNCT05567952
Start: 2022-10-19End: 2024-02-09Updated: 2024-10-08
Paxlovid for Treatment of Long Covid
CompletedNCT05576662
Start: 2022-11-08End: 2023-09-12Updated: 2025-09-04
A Decentralized, Randomized Phase 2 Efficacy and Safety Study of Nirmatrelvir/Ritonavir in Adults with Long COVID.
CompletedNCT05668091
Start: 2023-04-14End: 2024-08-21Updated: 2024-12-02
C4671026-A PHASE 2/3, INTERVENTIONAL SAFETY, PHARMACOKINETICS, AND EFFICACY, OPEN-LABEL, MULTI-CENTER, SINGLE-ARM STUDY TO INVESTIGATE ORALLY ADMINISTERED PF-07321332 (NIRMATRELVIR)/RITONAVIR IN NONHOSPITALIZED SYMPTOMATIC PEDIATRIC PARTICIPANTS WITH COVID-19 WHO ARE AT RISK OF PROGRESSION TO SEVERE DISEASE
RecruitingCTIS2023-509773-23-00
Start: 2023-07-13Target: 39Updated: 2025-12-19
Phase 3
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
RecruitingNCT05261139
Start: 2022-03-07End: 2026-07-30Target: 160Updated: 2025-07-17
Paxlovid long covid-19 prevention trial with recruitment in the community in Norway
Active, not recruitingCTIS2023-510337-29-00
Start: 2023-04-11Target: 2000Updated: 2025-05-28