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Showing 1–24 of 31 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Amprenavir/ritonavir Clear all
Completed Phase 2Phase 3 Interventional

Amprenavir/Ritonavir or Saquinavir/Ritonavir in HIV-Infected Subjects Following Failure With Kaletra as Their Second Protease Inhibitor

NCT00038519
View directory record Official record
Conditions
HIV Infections
Interventions
Amprenavir/ritonavir, Saquinavir/ritonavir
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2001
U.S. locations
23
States / cities
Phoenix, Arizona • Los Angeles, California • Denver, Colorado + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2006 · Synced Sep 25, 2026, 4:44 AM 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 Feb 28, 2011 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 1 Interventional

Safety and Tolerance of Indinavir Plus Ritonavir in HIV-Positive Patients Failing Therapy With Amprenavir, Nelfinavir, or Saquinavir

NCT00001133
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Ritonavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2006
U.S. locations
7
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 4 Interventional

A Pharmacokinetic (PK) Study of a Combination of Indinavir, Ritonavir, and Amprenavir

NCT00148785
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir/Ritonavir/Fosamprenavir
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 10, 2013 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2 Interventional

Five-Drug Anti-HIV Treatment Followed by Treatment Interruption in Patients Who Have Recently Been Infected With HIV

NCT00000940
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Abacavir sulfate, Amprenavir, Lamivudine, Stavudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
16 Years and older
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2006
U.S. locations
18
States / cities
Los Angeles, California • San Diego, California • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Sep 25, 2026, 4:44 AM EDT
Not listed Not applicable Interventional

Ritonavir and Agenerase Treatment for Patients Who Have Failed Previous Anti-HIV Treatment

NCT00006591
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Amprenavir
Drug
Lead sponsor
Gathe, Joseph, M.D.
Individual
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 25, 2026, 4:44 AM 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 22, 2014 · Synced Sep 25, 2026, 4:44 AM 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 6, 2012 · Synced Sep 25, 2026, 4:44 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Study of HIV Protease Inhibitors and Their Effects on Glucose Metabolism

NCT00259727
View directory record Official record
Conditions
Diabetes, HIV Infections, Insulin Resistance
Interventions
Not listed
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 72 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2009 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2 Interventional

A Study to Compare Three Doses of T-20 When Given in Combination With Abacavir, Amprenavir, Ritonavir, and Efavirenz to HIV-Infected Adults

NCT00002239
View directory record Official record
Conditions
HIV Infections
Interventions
Enfuvirtide, Ritonavir, Abacavir sulfate, Amprenavir, Efavirenz
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
20
States / cities
Beverly Hills, California • Los Angeles, California • Palm Springs, California + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2005 · Synced Sep 25, 2026, 4:44 AM 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 25, 2026, 4:44 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects on the Immune System of Anti-HIV Drugs in Patients Recently Infected With HIV

NCT00001119
View directory record Official record
Conditions
HIV Infections
Interventions
Tetanus Toxoid Vaccine, Indinavir sulfate, Lamivudine/Zidovudine, Ritonavir, Abacavir sulfate, Amprenavir, Efavirenz, Hepatitis B Vaccine (Recombinant), Lamivudine, Zidovudine
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
16 Years and older
Enrollment
288 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1999
U.S. locations
11
States / cities
San Francisco, California • Chicago, Illinois • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2011 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Drug Interactions of Amprenavir and Efavirenz, in Combination With a Second Protease Inhibitor, in HIV-Negative Volunteers

NCT00005762
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Ritonavir, Amprenavir, Nelfinavir mesylate, Efavirenz, Saquinavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2004
U.S. locations
8
States / cities
Palo Alto, California • Aurora, Colorado • Honolulu, Hawaii + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2 Interventional

Amprenavir/Ritonavir, Saquinavir/Ritonavir or Efavirenz in HIV-Infected Subjects Following Failure With Kaletra (ABT-378/Ritonavir) as Their First Protease Inhibitor Based HAART

NCT00038532
View directory record Official record
Conditions
HIV Infections
Interventions
Amprenavir/ritonavir, Saquinavir/ritonavir, Efavirenz
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2001
U.S. locations
26
States / cities
Phoenix, Arizona • Fountain Valley, California • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2008 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2 Interventional

A Study to See If Taking One or Two Extra Drugs Can Lower HIV Levels in Patients Who Have Failed Their Anti-HIV Drug Treatment

NCT00006152
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Abacavir sulfate, Amprenavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2002
U.S. locations
13
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 25, 2026, 4:44 AM EDT
Withdrawn Not applicable Interventional

Evaluation of Specific Infection-Fighting Cells For Prediction of Immune Response to Anti-HIV and Immune-Boosting Medication

NCT00006578
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Abacavir sulfate, Amprenavir, Lamivudine, Filgrastim
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
5
States / cities
Denver, Colorado • Miami, Florida • Chicago, Illinois + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2015 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2 Interventional

A Study of 1592U89 in Combination With Protease Inhibitors in HIV-Infected Patients Who Have Never Taken Anti-HIV Drugs

NCT00002440
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Ritonavir, Abacavir sulfate, Amprenavir, Nelfinavir mesylate, Saquinavir
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
16 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
8
States / cities
San Diego, California • New Haven, Connecticut • Kansas City, Missouri + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Anti-HIV Drug Regimens and Treatment-Switching Guidelines in HIV Infected Children

NCT00039741
View directory record Official record
Conditions
HIV Infections
Interventions
NRTIs (ABC, FTC, FTC/TDF, 3TC, 3TC/AZT, d4T, TDF, ddC, AZT), NNRTIs (EFV, NVP), PIs (AMP, IDV, LPV/r, NFV, SQV, RTV)
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
30 Days to 18 Years
Enrollment
266 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2010
U.S. locations
29
States / cities
Alhambra, California • Long Beach, California • Los Angeles, California + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 3 Interventional Results available

A Study To Assess GW433908 (Fosamprenavir) Containing Regimens In HIV-1 Infected Subjects

NCT00296504
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
fosamprenavir (GW433908), ritonavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
13 Years and older
Enrollment
753 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2010
U.S. locations
10
States / cities
Fountain Valley, California • San Francisco, California • Denver, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2013 · Synced Sep 25, 2026, 4:44 AM EDT
Not listed Phase 4 Interventional

Effectiveness and Safety of Epivir/Ziagen/Zerit (3TC/ABC/d4T) Versus Epivir/Ziagen/Sustiva (3TC/ABC/EFV) Versus Epivir/Ziagen/Agenerase/Norvir (3TC/ABC/APV/RTV) in HIV Patients Who Have Never Received Treatment

NCT00005017
View directory record Official record
Conditions
HIV Infections
Interventions
Ritonavir, Abacavir sulfate, Amprenavir, Efavirenz, Lamivudine, Stavudine
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 1 Interventional

Drug Interactions Among Anti-HIV Agents

NCT00001766
View directory record Official record
Conditions
HIV Infection
Interventions
Amprenavir, Efavirenz, Abacavir, Nelfinavir, Ritonavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2 Interventional Results available

48-Week Study Of GW433908 And Ritonavir Or GW433908 Alone, Twice Daily In Pediatric Patients With HIV Infection

NCT00089583
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus I
Interventions
LEXIVA (GW433908), Ritonavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
2 Years to 18 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2013
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • Oakland, California + 10 more
Source: ClinicalTrials.gov public record
Updated Mar 6, 2017 · Synced Sep 25, 2026, 4:44 AM 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 1, 2025 · Synced Sep 25, 2026, 4:44 AM EDT
Completed Phase 2 Interventional Results available

Study Of An Investigational Regimen Including FDA Approved HIV Drugs In HIV-Infected Pediatric Subjects

NCT00071760
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus, HIV Infections
Interventions
GW433908, ritonavir
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
4 Weeks to 2 Years
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2022
U.S. locations
2
States / cities
Jacksonville, Florida • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 9, 2023 · Synced Sep 25, 2026, 4:44 AM EDT