RECOVER-VITAL: Platform Protocol, Appendix to Measure the Effects of Paxlovid on Long COVID Symptoms

NCT ID: NCT05965726

Last Updated: 2026-01-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

964 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-07-26

Study Completion Date

2025-03-13

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

This is an appendix of master protocol (NCT05595369) designed to be flexible so that it is suitable for a wide range of settings within health care systems and in community settings where it can be integrated into COVID-19 programs and subsequent treatment plans. This sub-study is a prospective, multi-center, double-blind, randomized, controlled trial evaluating nirmatrelvir/ritonavir (Paxlovid) in two dosing durations for the treatment of Post-Acute Sequelae of SARS-CoV-2 Infection (PASC). The study is evaluating potential mechanisms of action, efficacy, and safety of antivirals and other therapeutics in individuals with PASC, according to the platform protocol objectives. The hypothesis is that persistent viral infection and/or overactive/chronic immune response and inflammation are underlying contributors to PASC and that antiviral and other applicable therapies may result in viral clearance or decreased inflammation and improvement in PASC symptoms.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

For this appendix of the master protocol (NCT05595369), participants will be randomized to Paxlovid (nirmatrelvir/ritonavir) vs. ritonavir control plus nirmatrelvir-matching placebo.

When there are multiple study interventions (sub-studies) available under the master protocol (NCT05595369), randomization will occur based on the specific inclusion/exclusion criteria of each appendix.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Long COVID-19 Long COVID

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

As part of screening, potential participants will answer symptom questions. Eligible participants will then complete relevant Symptom Cluster assessments at the Screening visit. Participants will subsequently be assigned to one of the three Symptom Clusters based on the assessments.

Participants must meet certain criteria within a specific symptom cluster in order to be included in the cluster. After study enrollment and initial cluster assignment, further assessments will be performed. Participants will undergo assessments for the symptom clusters for which the participants qualify.
Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators
Double-blind

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Paxlovid 25 day dosing

Paxlovid (nirmatrelvir 300mg, ritonavir 100mg) BID (twice a day) x 25 days

Group Type EXPERIMENTAL

Paxlovid 25 day dosing

Intervention Type DRUG

Nirmatrelvir 300mg and ritonavir 100mg taken BID (twice a day) for 30 days

Paxlovid 15 day dosing

Paxlovid (nirmatrelvir 300mg, ritonavir 100mg) BID (twice a day) x 15 days then ritonavir 100mg plus nirmatrelvir-matching placebo x 10 days

Group Type EXPERIMENTAL

Paxlovid 15 day dosing

Intervention Type DRUG

Nirmatrelvir 300mg and ritonavir 100mg taken BID (twice a day) for 15 days then ritonavir 100mg taken BID plus nirmatrelvir matching placebo BID for 15 days

Ritonavir plus nirmatrelvir-matching placebo

Ritonavir 100mg plus nirmatrelvir-matching placebo BID (twice a day) x 25 days

Group Type PLACEBO_COMPARATOR

Ritonavir plus nirmatrelvir-matching placebo

Intervention Type DRUG

Ritonavir 100mg taken BID (twice a day) plus nirmatrelvir matching placebo BID for 30 days

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Paxlovid 25 day dosing

Nirmatrelvir 300mg and ritonavir 100mg taken BID (twice a day) for 30 days

Intervention Type DRUG

Paxlovid 15 day dosing

Nirmatrelvir 300mg and ritonavir 100mg taken BID (twice a day) for 15 days then ritonavir 100mg taken BID plus nirmatrelvir matching placebo BID for 15 days

Intervention Type DRUG

Ritonavir plus nirmatrelvir-matching placebo

Ritonavir 100mg taken BID (twice a day) plus nirmatrelvir matching placebo BID for 30 days

Intervention Type DRUG

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Exclusion Criteria

1. Known pregnancy\*
2. Active or expected breastfeeding during the study
3. Known eGFR \< 30 mL/min
4. Known severe hepatic impairment (Child-Pugh Class C)
5. Current use of drugs highly dependent on CYP3A for clearance\*\* and for which elevated concentrations are associated with serious and/or life-threatening reactions and which cannot be interrupted during the time of study administration and within seven days before and after study drug administration
6. Current use of potent CYP3A inducers\*\* where significantly reduced nirmatrelvir or ritonavir plasma concentrations may be associated with the potential for loss of virologic response and possible resistance

* A pregnancy test must be performed at the Baseline Visit for participants who are capable of becoming pregnant.

* A guide of drugs that may be contraindicated are listed in Section 4 CONTRAINDICATIONS of the Full Prescribing Information of the EUA for PAXLOVID. https://labeling.pfizer.com/ShowLabeling.aspx?id=16474\&format=pdf
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Kanecia Obie Zimmerman

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Kanecia Obie Zimmerman

Associate Professor of Pediatrics

Responsibility Role SPONSOR_INVESTIGATOR

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

All sites listed under NCT05595369

Durham, North Carolina, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

Provided Documents

Download supplemental materials such as informed consent forms, study protocols, or participant manuals.

Document Type: Informed Consent Form

View Document

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

OTA-21-015G

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

Pro00111697_A

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.