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ClinicalTrials.gov public records Last synced Oct 17, 2026, 6:04 PM EDT

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Showing 1–24 of 451 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: ritonavir Clear all
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 14, 2016 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Not applicable Interventional Results available

Pilot Study of a Raltegravir Based NRTI Sparing Regimen

NCT00814879
View directory record Official record
Conditions
Acquired Immune Deficiency Syndrome, AIDS, Human Immunodeficiency Virus, HIV Infections
Interventions
Raltegravir, Atazanavir, Standard treatment regimen
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
5
States / cities
New Haven, Connecticut • Waterbury, Connecticut • West Haven, Connecticut + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2016 · Synced Oct 17, 2026, 6:04 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Pharmacokinetic Study of Antiretroviral Drugs and Related Drugs During and After Pregnancy

NCT00042289
View directory record Official record
Conditions
HIV Infections
Interventions
atazanavir/cobicistat, darunavir/ritonavir dosage #1, darunavir/ritonavir dosage #2, darunavir/ritonavir dosage #3, elvitegravir/cobicistat, dolutegravir, tenofovir alafenamide fumarate (TAF), TAF w/cobicistat, TAF w/cobicistat or ritonavir, efavirenz, darunavir/cobicistat, lopinavir/ritonavir dosage #1, atazanavir/ritonavir/tenofovir dosage #1, rifampicin, ethambutol, isoniazid, pyrazinamide, kanamycin, amikacin, capreomycin, moxifloxacin, levoflaxacin, ofloxacin, ethionamide/prothionamide, terizidone/cycloserine, para-aminosalicylic acid (PAS), high dose INH, bedaquiline, clofazamine, delamanid, linezolid, pretomanid, ethinyl estradiol, etonogestrel implant, nevirapine, amprenavir, abacavir, lopinavir/ritonavir dosage #2, indinavir/ritonavir dosage #1, fosamprenavir/ritonavir, lopinavir/ritonavir dosage #3, atazanavir/ritonavir dosage #1, didanosine delayed release (Videx® EC), emtricitabine, tenofovir, nelfinavir dosage #1, tipranavir/ritonavir, lopinavir/ritonavir dosage #4, raltegravir, etravirine, maraviroc, atazanavir/ritonavir dosage #2, tenofovir/atazanavir/ritonavir dosage #2, nelfinavir dosage #2, indinavir/ritonavir dosage #2, rilpivirine, darunavir/ritonavir dosage #4
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
1,578 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2020
U.S. locations
39
States / cities
Birmingham, Alabama • La Jolla, California • Long Beach, California + 26 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Oct 17, 2026, 6:04 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 19, 2026 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

CiPA Phase 1 ECG Biomarker Validation Study

NCT03070470
View directory record Official record
Conditions
Drug-induced QT Prolongation, Pharmacokinetics, Pharmacodynamics
Interventions
Ranolazine, Verapamil, Lopinavir / Ritonavir, Chloroquine, Placebo, Dofetilide and Diltiazem
Drug
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 18, 2020 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 2 Interventional Results available

RECOVER-VITAL: Platform Protocol to Measure the Effects of Antiviral Therapies on Long COVID Symptoms

NCT05595369
View directory record Official record
Conditions
Long COVID, Long Covid19
Interventions
Experimental: Paxlovid 25 day dosing, Experimental: Paxlovid 15 day dosing, Placebo Comparator: Control
Drug
Lead sponsor
Kanecia Obie Zimmerman
Other
Eligibility
18 Years and older
Enrollment
963 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
68
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Oct 17, 2026, 6:04 PM EDT
Completed No phase listed Observational

A Study to Learn How Paxlovid [Nirmatrelvir-ritonavir/PF-07321332] Works in COVID-19 Patients Who Are Elderly or Have Medical Conditions.

NCT07261085
View directory record Official record
Conditions
COVID-19
Interventions
nirmatrelvir-ritonavir, No treatment
Drug · Other
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
99,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Oct 17, 2026, 6:04 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 14, 2018 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Not applicable Interventional

A Study of Ritonavir (ABT-538) When Used With Nelfinavir in HIV-Infected Patients

NCT00002201
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Nelfinavir mesylate
Drug
Lead sponsor
Abbott
Industry
Eligibility
12 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 20, 2009 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study on Possible Interactions Between Protease Inhibitors (Anti-HIV Drugs) and Drugs Which Lower the Level of Fat in Your Blood

NCT00000941
View directory record Official record
Conditions
HIV Infections
Interventions
Pravastatin sodium, Simvastatin, Atorvastatin calcium, Ritonavir, Nelfinavir mesylate, Saquinavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2002
U.S. locations
13
States / cities
Los Angeles, California • San Francisco, California • Stanford, California + 10 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2021 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 2 Interventional Results available

Cyclosporine A in Combination With Abacavir Sulfate, Lamivudine, and Zidovudine and Lopinavir/Ritonavir in HIV

NCT00084149
View directory record Official record
Conditions
HIV Infections
Interventions
Abacavir sulfate, Lamivudine, and Zidovudine, Lopinavir/Ritonavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
4
States / cities
Minneapolis, Minnesota • New York, New York • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 17, 2026, 6:04 PM EDT
Terminated Phase 4 Interventional

Raltegravir (Isentress/MK-0518) and HIV-1 Infected CD4 Cells During Acute/Early HIV-1

NCT00781287
View directory record Official record
Conditions
Human Immunodeficiency Virus
Interventions
3-drug anti-HIV therapy, Raltegravir
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 12, 2013 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Clinical Trial of CNS-targeted HAART (CIT2)

NCT00624195
View directory record Official record
Conditions
HIV Infections
Interventions
FDA Approved Antiretroviral Therapy (see list below)
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
5
States / cities
San Diego, California • San Francisco, California • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Not applicable Interventional

A Study to Evaluate Various Combinations of Anti-HIV Medications to Treat Early HIV Infection

NCT00000919
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Lamivudine/Zidovudine, Ritonavir, Hydroxyurea, Abacavir sulfate, Amprenavir, Nelfinavir mesylate, Efavirenz, Lamivudine, Stavudine, Zidovudine, Didanosine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2002
U.S. locations
63
States / cities
Birmingham, Alabama • Los Angeles, California • Menlo Park, California + 37 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2012 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 2 Interventional Results available

TMC125-TiDP2-C238: An Exploratory Pharmacokinetics, Safety and Anti-HIV Activity Study of Etravirine (ETR) When Given With Boosted Atazanavir (ATV/Rtv) at Two Different Doses and 1 Nucleoside Reverse Transcriptase Inhibitor (NRTI) in Treatment Experienced HIV Patients

NCT00896051
View directory record Official record
Conditions
HIV Infections, Acquired Immunodeficiency Syndrome
Interventions
Atazanavir (ATV) 300 mg, Atazanavir (ATV) 400 mg, Ritonavir (rtv) 100 mg, Nucleo(side)/(tide) reverse transcriptase inhibitors (NRTIs), Etravirine (ETR) 200 mg, Tenofovir disoproxil fumarate (TDF) 300 mg
Drug
Lead sponsor
Janssen R&D Ireland
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
10
States / cities
Little Rock, Arkansas • Bakersfield, California • Beverly Hills, California + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2013 · Synced Oct 17, 2026, 6:04 PM EDT
Terminated Phase 3 Interventional Results available

Strategies and Treatments for Respiratory Infections & Viral Emergencies (STRIVE): Shionogi Protease Inhibitor (Ensitrelvir)

NCT05605093
View directory record Official record
Conditions
COVID-19
Interventions
Shionogi Protease Inhibitor (S-217622), placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
602 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
103
States / cities
Birmingham, Alabama • Tucson, Arizona • Fresno, California + 75 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 17, 2026, 6:04 PM EDT
Not listed No phase listed Observational

BLADE: Comparison of Once Daily Lopinavir/Ritonavir to Lopinavir/Ritonavir BID Dosing in HIV-Infected Subjects

NCT00388492
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
Bellos, Nicholaos C., M.D.
Individual
Eligibility
18 Years and older
Enrollment
45 participants
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 11, 2007 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 4 Interventional Results available

Study of Reyataz in HIV-infected Patients With Lipodystrophy Syndrome

NCT00135356
View directory record Official record
Conditions
HIV-Associated Lipodystrophy Syndrome
Interventions
Atazanavir (ATV) + ritonavir (RTV), continuation of backbone 2 nucleoside reverse transcriptase inhibitor (NRTIs), continuation of current HAART (boosted protease inhibitor [PI] combination + 2 NRTIs)
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
219 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
4
States / cities
Fort Lauderdale, Florida • Honolulu, Hawaii • Huntersville, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated May 7, 2010 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 2 Interventional

Comparing Standard-Dose Versus Adjusted-Dose Lopinavir/Ritonavir Therapy in HIV-Infected Persons With Drug Resistance

NCT00046033
View directory record Official record
Conditions
HIV Infections
Interventions
Lopinavir/ritonavir, Ritonavir, Saquinavir, Tenofovir disoproxil fumarate, Amprenavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
6
States / cities
Miami, Florida • Honolulu, Hawaii • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2011 · Synced Oct 17, 2026, 6:04 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 8, 2015 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 1 Interventional

Antiretroviral Drug Interaction Study in Volunteers With HIV

NCT01479361
View directory record Official record
Conditions
HIV, PCP, Toxoplasmosis
Interventions
Atovaquone 750 mg twice daily, Atovaquone 1500 mg twice daily
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 70 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 5, 2018 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug-Drug Interaction Study of Ketoconazole, Rifampicin and Ritonavir-Boosted Atazanavir With Single-Dose RO5093151 in Healthy Volunteers

NCT01591850
View directory record Official record
Conditions
Healthy Volunteer
Interventions
RO5093151, atazanavir, ketoconazole, rifampicin, ritonavir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Merritt Island, Florida
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 1Phase 2 Interventional

Safety of Saquinavir and High Doses of Lopinavir/Ritonavir in Children With HIV

NCT00084058
View directory record Official record
Conditions
HIV Infections
Interventions
Lopinavir/ritonavir, Saquinavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years to 17 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2006
U.S. locations
13
States / cities
Birmingham, Alabama • Long Beach, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 17, 2026, 6:04 PM EDT
Completed Phase 3 Interventional Results available

Switch Study to Evaluate F/TAF in HIV-1 Infected Adults Who Are Virologically Suppressed on Regimens Containing ABC/3TC

NCT02469246
View directory record Official record
Conditions
HIV-1 Infection
Interventions
F/TAF, ABC/3TC, ABC/3TC Placebo, F/TAF Placebo, 3rd ARV agent
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
34
States / cities
Phoenix, Arizona • Beverly Hills, California • La Jolla, California + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2019 · Synced Oct 17, 2026, 6:04 PM EDT