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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Terminated Phase 2Phase 3 Interventional Results available

Evaluation of Protease Inhibition for COVID-19 in Standard-Risk Patients (EPIC-SR).

NCT05011513
View directory record Official record
Conditions
COVID-19
Interventions
PF-07321332, Ritonavir, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
1,440 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
78
States / cities
Pelham, Alabama • Mesa, Arizona • Scottsdale, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 2 Interventional Results available

A Study of the Once Daily Combination of Etravirine and Darunavir/Ritonavir As Dual Therapy in Early Treatment-Experienced Patients

NCT01199939
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV)
Interventions
Etravirine, Ritonavir, Darunavir
Drug
Lead sponsor
Tibotec, Inc
Industry
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
22
States / cities
Long Beach, California • Los Angeles, California • San Francisco, California + 19 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2013 · Synced Sep 25, 2026, 2:12 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

HIV Antiretroviral Drugs and Metabolism

NCT00525239
View directory record Official record
Conditions
HIV Infections
Interventions
ritonavir, lopinavir/ritonavir, atazanavir/ritonavir, efavirenz
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2010
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2011 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 2 Interventional

Dual Boosted - Protease Inhibitor (PI) Pharmacokinetics (PK) Trial (Tipranavir / Ritonavir) in Highly Treatment-experienced HIV-1 Infected Patients

NCT00056641
View directory record Official record
Conditions
HIV Infections
Interventions
tipranavir, ritonavir, saquinavir, amprenavir, lopinavir
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
328 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
34
States / cities
Phoenix, Arizona • Berkeley, California • Fountain Valley, California + 28 more
Source: ClinicalTrials.gov public record
Updated Nov 30, 2023 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Darunavir/Ritonavir and Rosuvastatin Pharmacokinetic Study

NCT00885495
View directory record Official record
Conditions
HIV Infections
Interventions
darunavir, ritonavir, rosuvastatin, rosuvastatin, darunavir, ritonavir
Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 10, 2022 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Omeprazole and Ritonavir on GSK2336805 Pharmacokinetics in Healthy Adults

NCT01458054
View directory record Official record
Conditions
Hepatitis C
Interventions
Cohort 1 (GSK2336805 60mg x 1 dose, Omeprazole 40 mg q24h x 4 days, GSK2336805 60 mg x 1 dose and Omeprazole 40 mg x 1 dose), Cohort 2 (GSK2336805 30mg x 1 dose, Ritonavir 100mg q12h x 4 days, and Ritonavir 100mg q12h x 1 dose)
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jul 20, 2017 · Synced Sep 25, 2026, 2:12 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 25, 2026, 2:12 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Lopinavir/Ritonavir on Endothelial Function

NCT00076414
View directory record Official record
Conditions
Healthy
Interventions
Acetylcholine, L-NMMA
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 25, 2026, 2:12 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 25, 2026, 2:12 PM EDT
Completed Phase 2 Interventional

GW640385 Plus Ritonavir And NRTIs For 48 Weeks In HIV-1 Infected Adults

NCT00257621
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus I, HIV Infection
Interventions
GW640385, Ritonavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
9
States / cities
Phoenix, Arizona • San Francisco, California • Washington D.C., District of Columbia + 6 more
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Genetic Predictors of Variability in the Drug-drug Interaction Between Darunavir/Ritonavir and Pravastatin

NCT00630734
View directory record Official record
Conditions
HIV Infections, Hyperlipidemia
Interventions
Pravastatin, Darunavir, Ritonavir, Washout
Drug · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 60 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 21, 2014 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 4 Interventional

A Pilot Study of Kaletra and Intelence Tablets in Naive Subjects

NCT01045369
View directory record Official record
Conditions
HIV Infections
Interventions
Kaletra and Intelence Tablets
Drug
Lead sponsor
Therapeutic Concepts
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 30, 2017 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Not applicable Interventional

Study of Anti-HIV Therapy Intensification

NCT00034086
View directory record Official record
Conditions
HIV Infections
Interventions
Lopinavir/Ritonavir, Lamivudine/Zidovudine, Tenofovir disoproxil fumarate, Pneumococcal Vaccine, Polyvalent (23-valent), Lamivudine, Stavudine, Zidovudine, Didanosine, Lyme Disease Vaccine Recombinant OspA, Haemophilus B Conjugate Vaccine
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2006
U.S. locations
3
States / cities
Aurora, Colorado • Chicago, Illinois • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 17, 2012 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Not applicable Interventional

Effects of Anti-HIV Therapy on Treatment for Hepatitis C in HCV/HIV Infected Adults

NCT00100581
View directory record Official record
Conditions
HIV Infections, Hepatitis C
Interventions
Efavirenz, Lamivudine, Lopinavir/ritonavir, Pegylated interferon alfa-2a, Ribavirin, Tenofovir disoproxil fumarate
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2007
U.S. locations
2
States / cities
New York, New York • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 3 Interventional Results available

GRACE: A Study to Compare the Effectiveness, Safety and Tolerability of PREZISTA (Darunavir)/Ritonavir by Gender and Race When Administered With Other Antiretroviral Medications in Human Immunodeficiency Virus (HIV) Positive Women and Men.

NCT00381303
View directory record Official record
Conditions
HIV, Infectious
Interventions
darunavir, ritonavir
Drug
Lead sponsor
Tibotec, Inc
Industry
Eligibility
18 Years and older
Enrollment
429 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
41
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 38 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2014 · Synced Sep 25, 2026, 2:12 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 25, 2026, 2:12 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 28, 2021 · Synced Sep 25, 2026, 2:12 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 25, 2026, 2:12 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of RO5190591 (Danoprevir) in Healthy Volunteers

NCT01164488
View directory record Official record
Conditions
Healthy Volunteer
Interventions
danoprevir, ketoconazole, ritonavir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 64 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 28, 2016 · Synced Sep 25, 2026, 2:12 PM 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 25, 2026, 2:12 PM EDT
Completed Phase 3 Interventional

Study of Lopinavir, Ritonavir, Tenofovir and Emtricitabine in HIV-Infected Antiretroviral Naïve Subjects

NCT00043966
View directory record Official record
Conditions
HIV Infections
Interventions
Lopinavir/ritonavir, Tenofovir DF, Emtricitabine
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2002
U.S. locations
29
States / cities
Phoenix, Arizona • Beverly Hills, California • Fountain Valley, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2006 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 4 Interventional

A Randomized, Prospective Study of the Efficacy, Safety and Tolerability of Two Doses of GW433908Ritonavir Given With Abacavir/Lamivudine Fixed Dose Combination

NCT00335270
View directory record Official record
Conditions
HIV
Interventions
fos-amprenavir calcium, ritonavir, abacavir/lamivudine as Epzicom
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 13, 2013 · Synced Sep 25, 2026, 2:12 PM EDT
Completed Phase 4 Interventional Results available

Kaletra Sex/Gender Pharmacokinetics (PK) Study

NCT00148759
View directory record Official record
Conditions
HIV Infections
Interventions
LPV/r
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 2, 2013 · Synced Sep 25, 2026, 2:12 PM EDT