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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo Ritonavir Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Two-part Study to Compare a Tablet and Capsule Formulation of GSK2838232 With and Without Food, and to Assess the Safety and Drug Levels of Repeated Once-daily Doses of GSK2838232 Without Ritonavir

NCT03234036
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus, HIV Infections
Interventions
GSK2838232 100 mg tablet, GSK2838232 50 mg capsule, Ritonavir 100 mg tablets, Placebo for GSK2838232 tablets
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 1Phase 2 Interventional

Proof of Concept Study to Determine the Safety and Antiviral Effect of BZF961 With or Without Ritonavir Boosting in Hepatitis C Virus Infected Patients

NCT01825980
View directory record Official record
Conditions
Hepatitis C
Interventions
BZF961, Ritonavir, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
Not listed
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
3
States / cities
San Diego, California • Orlando, Florida • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Feb 20, 2021 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Bone, Immunologic, and Virologic Effects of a Antiretroviral Regimen

NCT01400412
View directory record Official record
Conditions
HIV-1 Infection
Interventions
Darunavir, Ritonavir, Tenofovir disoproxil fumarate, Emtricitabine, Placebo for Tenofovir disoproxil fumarate, Placebo for Maraviroc, Maraviroc
Drug
Lead sponsor
Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Network
Eligibility
18 Years and older
Enrollment
262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
37
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2024 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 3 Interventional Results available

Switch Study to Evaluate F/TAF in HIV-1 Positive Participants Who Are Virologically Suppressed on Regimens Containing FTC/TDF

NCT02121795
View directory record Official record
Conditions
HIV-1 Infection
Interventions
FTC/TDF, F/TAF, Allowed third antiretroviral agent, FTC/TDF Placebo, F/TAF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
668 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
57
States / cities
Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 40 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2020 · Synced Sep 29, 2026, 2:14 PM EDT
Recruiting Phase 2 Interventional

A Study of the Preliminary Efficacy of DARE-HPV to Treat High-risk Persistent Human Papillomavirus (hrHPV)

NCT07601074
View directory record Official record
Conditions
Human Papilloma Virus (HPV), High-risk Human Papillomavirus Infection
Interventions
Lopinavir / ritonavir
Drug
Lead sponsor
Daré Bioscience, Inc.
Industry
Eligibility
22 Years to 50 Years · Female only
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
4
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Layton, Utah + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 3 Interventional Results available

Multicenter, Randomized, Double-Blind, Double-Dummy, Phase 3 Study of the Safety and Efficacy of Elvitegravir Versus Raltegravir

NCT00708162
View directory record Official record
Conditions
HIV Infection
Interventions
Elvitegravir, Raltegravir, EVG placebo, RAL placebo, Background regimen
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
724 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
94
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Beverly Hills, California + 59 more
Source: ClinicalTrials.gov public record
Updated May 29, 2016 · Synced Sep 29, 2026, 2:14 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 29, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Treatment of Chronic Delta Hepatitis With Lonafarnib and Ritonavir

NCT02511431
View directory record Official record
Conditions
Hepatitis D
Interventions
Lonafarnib, Ritonavir, Placebo
Drug · Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Sep 29, 2026, 2:14 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Repeat Dose Pharmacokinetic (PK) and Safety Study of GSK2838232 With and Without Ritonavir (RTV) Conducted in Healthy Subjects

NCT02289495
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
GSK2838232, Placebo, Ritonavir
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Sep 29, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional

IRAK4 Inhibition in Treatment of COVID-19 With ARDS (I-RAMIC)

NCT04575610
View directory record Official record
Conditions
COVID-19
Interventions
PF-06650833, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 75 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 25, 2021 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 3 Interventional Results available

Effect of Maraviroc on Endothelial Function in HIV-Infected Patients

NCT00844519
View directory record Official record
Conditions
HIV Infection, Cardiovascular Disease, Inflammation, HIV Infections
Interventions
Maraviroc, placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2014 · Synced Sep 29, 2026, 2:14 PM EDT
Terminated Phase 3 Interventional Results available

Study Of Chemokine Coreceptor 5 (CCR5) Antagonist GW873140 In R5-Tropic Treatment-Experienced HIV-Infected Subjects

NCT00197145
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus I
Interventions
GW873140
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
52
States / cities
Birmingham, Alabama • Beverly Hills, California • Fountain Valley, California + 43 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2018 · Synced Sep 29, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

Dose-finding Study of GSK2248761 in Antiretroviral Therapy-experienced Subjects With NNRTI-resistant HIV Infection

NCT01199731
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
GSK2248761 100 mg once daily, GSK2248761 200 mg once daily, Etravirine
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
30
States / cities
Birmingham, Alabama • Phoenix, Arizona • Bakersfield, California + 25 more
Source: ClinicalTrials.gov public record
Updated Nov 16, 2017 · Synced Sep 29, 2026, 2:14 PM EDT
Not yet recruiting Phase 2 Interventional

SARS-CoV-2 and Herpesvirus Inhibition for Ending Long COVID Dysfunction

NCT07597902
View directory record Official record
Conditions
Post-acute Sequelae of COVID-19, Long COVID
Interventions
Valacyclovir, Celecoxib, Paxlovid, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate the Safety and Efficacy of Stribild Versus Ritonavir-Boosted Atazanavir Plus Truvada in Human Immunodeficiency Virus, Type 1 (HIV-1) Infected, Antiretroviral Treatment-Naive Adults

NCT01106586
View directory record Official record
Conditions
HIV, HIV Infections
Interventions
Stribild, ATV, Ritonavir, FTC/TDF, Stribild Placebo, ATV Placebo, RTV Placebo, FTC/TDF Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
708 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
86
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Beverly Hills, California + 57 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study in Healthy Adults to Evaluate Pharmacokinetics, Safety and Tolerability of ABT-450 With Ritonavir

NCT00931281
View directory record Official record
Conditions
HCV Infection
Interventions
ABT-450, ritonavir, Placebo for ABT-450, Placebo for ritonavir
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2009
U.S. locations
1
States / cities
Waukegan, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 12, 2010 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single and Repeated Dose Escalation Study of GSK2838232

NCT02795754
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
GSK2838232 PIB, GSK2838232 IR1, GSK2838232 IR2, Placebo PIB, Ritonavir
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of the HIV Protease Inhibitors Atazanavir and Lopinavir/Ritonavir on Cardiovascular Disease Risk Factors

NCT00720590
View directory record Official record
Conditions
Endothelial Dysfunction
Interventions
Atazanavir, Lopinavir/ritonavir, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 24, 2017 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

A Randomized Study to Evaluate the Safety, Tolerability and Antiviral Activity of ABT-450, ABT-333 and ABT-072

NCT01074008
View directory record Official record
Conditions
Hepatitis C, HCV, Chronic Hepatitis C Infection, Hepatitis C Genotype 1
Interventions
ABT-450, ABT-072, ABT-333, Ritonavir, Peginterferon alpha-2a, Ribavirin, Placebo
Drug · Other
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
18 Years to 65 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
25
States / cities
Phoenix, Arizona • Anaheim, California • La Jolla, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2015 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Dose Escalation Study of GSK2838232 in Healthy Subjects

NCT01802918
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
GSK2838232, Placebo, Ritonavir
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 50 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Sep 29, 2026, 2:14 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Single Dose Pharmacokinetic (PK) and Safety Study of GSK2838232 With and Without Ritonavir (RTV) Conducted in Healthy Subjects

NCT02289482
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
GSK2838232 PIB (SDD), GSK2838232 PIB (API), Placebo, Ritonavir
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 14, 2017 · Synced Sep 29, 2026, 2:14 PM EDT
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Treatment for COVID-19 in High-Risk Adult Outpatients

NCT04354428
View directory record Official record
Conditions
COVID-19, SARS-CoV-2
Interventions
Ascorbic Acid, Hydroxychloroquine Sulfate, Azithromycin, Folic Acid, Lopinavir 200 MG / Ritonavir 50 MG [Kaletra]
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 80 Years
Enrollment
289 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
6
States / cities
Chicago, Illinois • New Orleans, Louisiana • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2022 · Synced Sep 29, 2026, 2:14 PM EDT
Completed Phase 3 Interventional

Study of the Efficacy and Safety of Lonafarnib / Ritonavir With and Without Pegylated Interferon -Alfa-2a

NCT03719313
View directory record Official record
Conditions
Hepatitis Delta Virus
Interventions
Lonafarnib, Ritonavir, PEG IFN-alfa-2a, Placebo Lonafarnib, Placebo Ritonavir
Drug
Lead sponsor
Eiger BioPharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
407 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
18
States / cities
Fresno, California • Los Angeles, California • Palo Alto, California + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2023 · Synced Sep 29, 2026, 2:14 PM EDT
Terminated Phase 3 Interventional Results available

Comparative Trial Of Maraviroc Versus Emtricitabine/Tenofovir Both With Darunavir/Ritonavir In Antiretroviral-Naive Patients Infected With CCR5 Tropic HIV 1

NCT01345630
View directory record Official record
Conditions
HIV-1
Interventions
Maraviroc, Emtricitabine/tenofovir, darunavir/ritonavir 800/100 mg, placebo for emtricitabine/tenofovir, placebo for maraviroc
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
813 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
84
States / cities
Birmingham, Alabama • Hobson City, Alabama • Hayward, California + 45 more
Source: ClinicalTrials.gov public record
Updated Jan 13, 2016 · Synced Sep 29, 2026, 2:14 PM EDT