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Showing 1–24 of 82 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ritonavir 100 mg tablets Clear all
Completed Phase 3 Interventional Results available

A Study to Compare Effectiveness and Safety of Darunavir/Ritonavir (DRV/Rtv) 800mg/100mg Once Daily Versus DRV/Rtv 600mg/100mg Twice Daily in Early Treatment-Experienced HIV-1 Infected Patients (ODIN)

NCT00524368
View directory record Official record
Conditions
Human Immunodeficiency Virus - Type 1
Interventions
Darunavir (DRV), Ritonavir (rtv)
Drug
Lead sponsor
Tibotec Pharmaceuticals, Ireland
Industry
Eligibility
18 Years and older
Enrollment
590 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
30
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Beverly Hills, California + 27 more
Source: ClinicalTrials.gov public record
Updated Feb 14, 2013 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional

A Decentralized, Randomized Phase 2 Efficacy and Safety Study of Nirmatrelvir/Ritonavir in Adults with Long COVID.

NCT05668091
View directory record Official record
Conditions
Long COVID
Interventions
Nirmatrelvir, Ritonavir, Placebo
Drug
Lead sponsor
Harlan M Krumholz
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 1, 2024 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safety, Tolerability, and Blood Levels of Ritonavir-Boosted Atazanavir and Rifampin When Taken Together in HIV Uninfected Adults

NCT00096850
View directory record Official record
Conditions
HIV Infections, Tuberculosis
Interventions
Atazanavir, Rifampin, Ritonavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2007
U.S. locations
3
States / cities
Palo Alto, California • Columbus, Ohio • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose Finding Confirmation of Atazanavir With Ritonavir and Efavirenz (ATV/RTV + EFV) in Healthy Subjects

NCT00357188
View directory record Official record
Conditions
HIV Infections, Protease Inhibitor
Interventions
Atazanavir Sulphate + Ritonavir, Atazanavir Sulphate + Ritonavir + Efavirenz
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 7, 2011 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Not applicable Interventional

Effect of an Enfuvirtide-based Anti-HIV Drug Regimen on Latent HIV Reservoirs in Treatment Naive Adults

NCT00051831
View directory record Official record
Conditions
HIV Infections
Interventions
Emtricitabine, Enfuvirtide, Ritonavir, Saquinavir, Tenofovir disoproxil fumarate
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
6
States / cities
Aurora, Colorado • Boston, Massachusetts • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 3 Interventional Results available

Study Comparing Lopinavir/Ritonavir (LPV/r) + Emtricitabine/Tenofovir Disoproxil Fumarate (FTC/TDF) With a Nucleoside Sparing Regimen Consisting of Lopinavir/Ritonavir + Raltegravir (RAL)

NCT00711009
View directory record Official record
Conditions
Human Immunodeficiency Virus Infection
Interventions
lopinavir/ritonavir (LPV/r), emtricitabine/tenofovir disoproxil fumarate (FTC/TDF), raltegravir (RAL)
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years and older
Enrollment
206 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
14
States / cities
Phoenix, Arizona • Beverly Hills, California • Atlantis, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2012 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study With Atazanavir Administered With and Without Ritonavir and a Cytochrome P450 Substrate Rosiglitazone

NCT00362726
View directory record Official record
Conditions
HIV Infections
Interventions
Rosiglitazone maleate, Atazanavir Sulphate, Atazanavir Sulphate + Rosiglitazone maleate, Atazanavir Sulphate + Ritonavir, Atazanavir Sulphate + Ritonavir + Rosiglitazone maleate
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 7, 2011 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Results available

Study of Oral Treatments for Hepatitis C

NCT02786537
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
SOF/LDV (sofosbuvir/ledipasvir), PrOD (ombitasvir/paritaprevir/ritonavir with dasabuvir) (Phase 1 only), EBR/GZR (elbasvir/grazoprevir), Ribavirin
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
1,275 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
38
States / cities
Little Rock, Arkansas • Palo Alto, California • San Diego, California + 27 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2021 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Effect of Ritonavir on the Single-Dose Pharmacokinetics of JNJ-61393215 in Healthy Participants

NCT03593954
View directory record Official record
Conditions
Healthy
Interventions
JNJ-61393215, Ritonavir
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 3 Interventional Results available

A Study to Determine Safety and Efficacy of Dolutegravir/Abacavir/Lamivudine (DTG/ABC/3TC) in Human Immunodeficiency Virus (HIV)-1 Infected Antiretroviral Therapy (ART) Naïve Women (ARIA)

NCT01910402
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus, HIV Infections
Interventions
Dolutegravir/abacavir/lamivudine FDC, Atazanavir, Ritonavir, Tenofovir/emtricitabine FDC
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older · Female only
Enrollment
499 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
37
States / cities
Phoenix, Arizona • Bakersfield, California • Beverly Hills, California + 31 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2024 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Results available

Raltegravir + Lopinavir/Ritonavir or Emtricitabine/Tenofovir for HIV Treatment Naive Subjects

NCT00654147
View directory record Official record
Conditions
HIV Infections
Interventions
Raltegravir & Lopinavir/ritonavir, Raltegravir and emtricitabine/tenofovir
Drug
Lead sponsor
Margaret A. Fischl, M.D.
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 2, 2015 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Results available

A Pilot Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Antiviral Activity of ABT-450 With Ritonavir (ABT-450/r) Dosed in Combination With ABT-072 and Ribavirin (RBV)

NCT01221298
View directory record Official record
Conditions
Hepatitis C, HCV, Chronic Hepatitis C Infection, Hepatitis C Genotype 1
Interventions
ABT-450, ABT-072, Ribavirin, Ritonavir
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
18 Years to 65 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
4
States / cities
Los Angeles, California • Chicago, Illinois • San Antonio, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2015 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Pharmacokinetic Study of Pitavastatin and Ritonavir-Boosted Darunavir or Efavirenz

NCT01695954
View directory record Official record
Conditions
Hyperlipidemia, HIV
Interventions
Pitavastatin, Darunavir, Ritonavir, Efavirenz
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 60 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2020 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Results available

Raltegravir vs. Atazanavir in Combination With Truvada® for the Treatment of Antiretroviral naïve HIV Infected Patients

NCT00762892
View directory record Official record
Conditions
HIV Infections
Interventions
Raltegravir and truvada, Atazanavir, Norvir and Truvada
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 4, 2015 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Results available

Atazanavir/Ritonavir, Once Daily + Raltegravir, Twice Daily, Switch Study in HIV-1-Infected Patients

NCT01332227
View directory record Official record
Conditions
HIV, Combination Therapy
Interventions
Atazanavir, Ritonavir (heat-stable), Raltegravir, Tenofovir/Emtricitabine
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
8
States / cities
Little Rock, Arkansas • Palm Springs, California • San Francisco, California + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2015 · Synced Sep 24, 2026, 4:41 PM EDT
Withdrawn Phase 2 Interventional

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

NCT05545319
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), Coronavirus Disease 2019 (COVID-19), Immunocompromised, Hospitalization, Child, Hospitalized
Interventions
Nirmatrelvir, Ritonavir, Placebo for nirmatrelvir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Cooperstown, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 28, 2023 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Results available

HIV Attachment Inhibitor to Treat Human Immunodeficiency Virus 1 (HIV-1) Infections

NCT01384734
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
BMS-663068 400 mg, BMS-663068 800 mg, BMS-663068 600 mg, BMS-663068 1200 mg, Raltegravir 400 mg, Tenofovir 300 mg, Ritonavir 100 mg, Atazanavir 300 mg
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
254 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
13
States / cities
San Francisco, California • Washington D.C., District of Columbia • Coral Gables, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 4 Interventional

Boosted Atazanavir and Truvada Given Once-Daily - BATON Study

NCT00224445
View directory record Official record
Conditions
HIV Infections
Interventions
Truvada, Atazanavir, Ritonavir
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Foster City, California
Source: ClinicalTrials.gov public record
Updated Jan 9, 2013 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional

An Open Label Trial of TMC114/RTV in HIV-1 Infected, Treatment-experienced Subjects.

NCT00081588
View directory record Official record
Conditions
HIV Infection
Interventions
TMC114
Drug
Lead sponsor
Tibotec Pharmaceuticals, Ireland
Industry
Eligibility
18 Years and older
Enrollment
555 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
26
States / cities
Birmingham, Alabama • Beverly Hills, California • La Jolla, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jun 19, 2014 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional

A Phase 2 Study to Evaluate Pharmacokinetics, Safety and Efficacy of TMC114/Ritonavir (Rtv) in Human Immunodeficiency Virus (HIV)-1 Infected Children and Adolescents

NCT00355524
View directory record Official record
Conditions
HIV-1, HIV Infections
Interventions
TMC114, Ritonavir
Drug
Lead sponsor
Tibotec Pharmaceuticals, Ireland
Industry
Eligibility
6 Years to 17 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
7
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2013 · Synced Sep 24, 2026, 4:41 PM EDT
Withdrawn Phase 3 Interventional

Second-line Treatment of HIV-1 With Ritonavir Boosted Atazanavir or Darunavir With an Optimized NRTI Backbone

NCT01605084
View directory record Official record
Conditions
HIV
Interventions
Atazanavir, Darunavir, Ritonavir, Optimized NRTI backbone
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
14
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 8 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2023 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 3 Interventional Results available

Efavirenz or Atazanavir/Ritonavir Given With Emtricitabine/Tenofovir Disoproxil Fumarate or Abacavir/Lamivudine in HIV Infected Treatment-Naive Adults

NCT00118898
View directory record Official record
Conditions
HIV Infections
Interventions
Abacavir/Lamivudine, Atazanavir, Efavirenz, Emtricitabine/Tenofovir disoproxil fumarate, Ritonavir, Abacavir/Lamivudine placebo, Emtricitabine/Tenofovir disoproxil fumarate placebo
Drug
Lead sponsor
Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Network
Eligibility
16 Years and older
Enrollment
1,864 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
51
States / cities
Los Angeles, California • Palo Alto, California • San Diego, California + 30 more
Source: ClinicalTrials.gov public record
Updated Oct 11, 2018 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of ABT-450 With Ritonavir (ABT-450/r) When Given Together With ABT-333 and Ribavirin (RBV) in Treatment-Naïve and Non-responder Subjects With Genotype 1 Chronic Hepatitis C Virus (HCV) Infection

NCT01306617
View directory record Official record
Conditions
Chronic Hepatitis C Infection, Hepatitis C, Hepatitis C Virus
Interventions
ABT-450, ABT-333, ribavirin, ritonavir
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
11
States / cities
Los Angeles, California • Aurora, Colorado • Gainesville, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2015 · Synced Sep 24, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Results available

A Clinical Study Of An Investigational Regimen Including Marketed HIV Drugs In HIV-1 Pediatric Subjects Ages 2-18 Years

NCT00040664
View directory record Official record
Conditions
HIV Infection
Interventions
ritonavir, fosamprenavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
2 Years to 18 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2008
U.S. locations
17
States / cities
Birmingham, Alabama • Los Angeles, California • Jacksonville, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2017 · Synced Sep 24, 2026, 4:41 PM EDT