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Showing 1–24 of 451 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: ritonavir Clear all
Completed Phase 3 Interventional Results available

Safety and Efficacy of COBI-boosted Atazanavir Versus Ritonavir-boosted Atazanavir Each Administered With Emtricitabine/Tenofovir Disoproxil Fumarate in HIV-1 Infected, Antiretroviral Treatment-Naive Adults

NCT01108510
View directory record Official record
Conditions
HIV, HIV Infections
Interventions
COBI, RTV, ATV, FTC/TDF, COBI placebo, RTV placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
698 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
64
States / cities
Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 42 more
Source: ClinicalTrials.gov public record
Updated May 22, 2016 · Synced Sep 2, 2026, 10:54 AM EDT
Terminated Phase 3 Interventional

Study Of Chemokine Coreceptor 5 (CCR5) Antagonist GW873140 In R5/X4-Tropic Treatment-Experienced HIV-Infected Subjects

NCT00197197
View directory record Official record
Conditions
HIV Infection
Interventions
GW873140
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005
U.S. locations
11
States / cities
Los Angeles, California • Norwalk, Connecticut • Fort Lauderdale, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2011 · Synced Sep 2, 2026, 10:54 AM 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 1, 2016 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug-Drug Interaction Study Between Danoprevir/Low-Dose Ritonavir and Cyclosporine in Healthy Volunteers

NCT01514968
View directory record Official record
Conditions
Healthy Volunteer
Interventions
cyclosporine, danoprevir, ritonavir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Sep 2, 2026, 10:54 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Phase 1/2a Study of DB-1303/BNT323 in Advanced/Metastatic Solid Tumors

NCT05150691
View directory record Official record
Conditions
HER2-positive Advanced Solid Tumor
Interventions
DB-1303/BNT323, Pertuzumab Injection, Ritonavir, Itraconazole
Biological · Drug
Lead sponsor
DualityBio Inc.
Industry
Eligibility
18 Years and older
Enrollment
796 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
35
States / cities
Cerritos, California • Los Angeles, California • San Diego, California + 29 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 2, 2026, 10:54 AM EDT
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 2, 2026, 10:54 AM EDT
Completed Phase 3 Interventional

Anti-HIV Drug Regimens With or Without Protease Inhibitors and Drug Level Monitoring in HIV Infected Adolescents

NCT00075907
View directory record Official record
Conditions
HIV Infections
Interventions
Efavirenz + 2 NRTIs, Lopinavir/Ritonavir + 2 NRTIs, Therapeutic Drug Monitoring
Drug · Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years to 23 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
13
States / cities
Alhambra, California • Long Beach, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2013 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 2 Interventional Results available

Interventions for HIV Negative Men and Women Who Have High-risk Suspected Exposure to HIV

NCT00949234
View directory record Official record
Conditions
HIV Prevention, HIV Infections
Interventions
tenofovir + emtricitabine, lopinavir/ritonavir
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2017 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 3 Interventional

A Study to Compare Two Anti-HIV Drug Combinations in HIV-Infected Patients Who Have Previously Received Anti-HIV Treatment

NCT00004581
View directory record Official record
Conditions
HIV Infections
Interventions
Lopinavir/Ritonavir, Nevirapine
Drug
Lead sponsor
Abbott
Industry
Eligibility
12 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
46
States / cities
Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 33 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2009 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Not applicable Interventional

The Effectiveness of Ritonavir Plus Zidovudine Plus Lamivudine in HIV-Infected Patients

NCT00001075
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Lamivudine, Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
16 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2007
U.S. locations
3
States / cities
Aurora, Colorado • Chicago, Illinois • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 2 Interventional Results available

Effects of Maraviroc (MVC) on HIV-related Kaposi's Sarcoma (KS)

NCT01276236
View directory record Official record
Conditions
Kaposi's Sarcoma
Interventions
Maraviroc
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 4, 2021 · Synced Sep 2, 2026, 10:54 AM EDT
Terminated Phase 2 Interventional Results available

Nine Month Course of Anti-HIV Medications for People Recently Infected With HIV

NCT00090779
View directory record Official record
Conditions
HIV Infections
Interventions
Emtricitabine/ tenofovir disoproxil fumarate, Lopinavir/Ritonavir
Drug
Lead sponsor
Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Network
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
25
States / cities
San Diego, California • San Francisco, California • Torrance, California + 16 more
Source: ClinicalTrials.gov public record
Updated Oct 10, 2018 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetics of Apricitabine and Tipranavir When Dosed Alone or Together

NCT00352066
View directory record Official record
Conditions
HIV Infection
Interventions
apricitabine
Drug
Lead sponsor
Avexa
Industry
Eligibility
18 Years to 40 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 22, 2011 · Synced Sep 2, 2026, 10:54 AM EDT
Recruiting Phase 3 Interventional

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

NCT05261139
View directory record Official record
Conditions
COVID-19
Interventions
nirmatrelvir, ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
0 Years to 17 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
50
States / cities
Phoenix, Arizona • Los Angeles, California • Washington D.C., District of Columbia + 32 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2025 · Synced Sep 2, 2026, 10:54 AM EDT
Not listed Phase 4 Interventional

SHARE: Simple HAART With Abacavir, Reyataz, and Epivir

NCT00426296
View directory record Official record
Conditions
HIV Infections, Lipodystrophy
Interventions
atazanavir (Reyataz), ritonavir (Norvir)
Drug
Lead sponsor
Clinical Alliance for Research & Education - Infectious Diseases, LLC.
Other
Eligibility
18 Years and older
Timeline
Started 2006
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 31, 2007 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 1 Interventional

Metformin Hydrochloride and Ritonavir in Treating Patients With Relapsed or Refractory Multiple Myeloma or Chronic Lymphocytic Leukemia

NCT02948283
View directory record Official record
Conditions
Anemia, Fatigue, Fever, Lymphadenopathy, Lymphocytosis, Night Sweats, Recurrent Chronic Lymphocytic Leukemia, Recurrent Plasma Cell Myeloma, Refractory Chronic Lymphocytic Leukemia, Refractory Plasma Cell Myeloma, Splenomegaly, Thrombocytopenia, Weight Loss
Interventions
Laboratory Biomarker Analysis, Metformin Hydrochloride, Pharmacological Study, Ritonavir, Quality-of-Life, Questionnaire
Other · Drug
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Feb 11, 2021 · Synced Sep 2, 2026, 10:54 AM 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 2, 2026, 10:54 AM EDT
Completed Phase 1 Interventional

ATV/Ritonavir Nevirapine Interaction (USPAC)

NCT00162149
View directory record Official record
Conditions
HIV Infections
Interventions
Nevirapine, Nevirapine + Atazanavir/Ritonavir, Atazanavir + Ritonavir
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 55 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
2
States / cities
Pomona, California • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 7, 2011 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 3 Interventional

TMC125-C206: A Phase III Study to Investigate the Efficacy, Tolerability and Safety of TMC125 as Part of an Antiretroviral Regimen, Including TMC114/Ritonavir and an Investigator-selected Optimized Background, in HIV-1 Infected Patients With Limited to no Treatment Options.

NCT00254046
View directory record Official record
Conditions
HIV
Interventions
TMC125, Placebo
Drug
Lead sponsor
Tibotec Pharmaceuticals, Ireland
Industry
Eligibility
18 Years and older
Enrollment
616 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
32
States / cities
Little Rock, Arkansas • Beverly Hills, California • Los Angeles, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jun 19, 2014 · Synced Sep 2, 2026, 10:54 AM EDT
Completed No phase listed Observational

IMPAACT P1080: Psychiatric and Antiretroviral Medication Concentrations in HIV-infected and Uninfected Children and Adolescents

NCT01232361
View directory record Official record
Conditions
ADHD, HIV
Interventions
Not listed
Lead sponsor
International Maternal Pediatric Adolescent AIDS Clinical Trials Group
Network
Eligibility
6 Years to 25 Years
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
21
States / cities
Birmingham, Alabama • Long Beach, California • Los Angeles, California + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2021 · Synced Sep 2, 2026, 10:54 AM EDT
Completed No phase listed Observational

A Study of HIV Levels During Pregnancy and After Childbirth

NCT00041964
View directory record Official record
Conditions
HIV Infections, Pregnancy
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older · Female only
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
31
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jul 23, 2012 · Synced Sep 2, 2026, 10:54 AM EDT
Completed Phase 2 Interventional

A Study to Compare Anti-HIV Drugs Given Twice a Day or Once a Day, With or Without Direct Observation

NCT00036452
View directory record Official record
Conditions
HIV Infections
Interventions
lopinavir/ritonavir, emtricitabine, stavudine, tenofovir DF
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
402 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2006
U.S. locations
27
States / cities
Los Angeles, California • Sacramento, California • San Diego, California + 20 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 2, 2026, 10:54 AM 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 2, 2026, 10:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Drug Interaction of PA-824, an Investigational Tuberculosis Medication, Together With Efavirenz, Ritonavir-Boosted Lopinavir, or Rifampin

NCT01571414
View directory record Official record
Conditions
Tuberculosis
Interventions
PA-824, Efavirenz (EFV), Lopinavir/Ritonavir (LPV/r), Rifampin (RIF)
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
4
States / cities
San Francisco, California • Baltimore, Maryland • Columbus, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 2, 2026, 10:54 AM EDT