{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+Ritonavir&page=2", "query": { "intervention": "Placebo Ritonavir", "page": 2 }, "page_size": 10 }, "pagination": { "page": 2, "page_size": 10, "total_count": 50, "total_pages": 5, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+Ritonavir&page=3&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+Ritonavir&page=1&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-04T08:09:27.734Z", "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.", "notes": [ "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.", "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.", "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees." ], "trials": [ { "nct_id": "NCT01705574", "title": "Safety and Efficacy of E/C/F/TDF Versus RTV-Boosted ATV Plus FTC/TDF in HIV-1 Infected, Antiretroviral Treatment-Naive Women", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Acquired Immunodeficiency Syndrome", "HIV Infections" ], "interventions": [ { "name": "E/C/F/TDF", "type": "DRUG" }, { "name": "ATV", "type": "DRUG" }, { "name": "RTV", "type": "DRUG" }, { "name": "FTC/TDF", "type": "DRUG" }, { "name": "E/C/F/TDF Placebo", "type": "DRUG" }, { "name": "ATV Placebo", "type": "DRUG" }, { "name": "RTV Placebo", "type": "DRUG" }, { "name": "FTC/TDF Placebo", "type": "DRUG" }, { "name": "E/C/F/TAF", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "FEMALE", "summary": "18 Years and older · Female only" }, "enrollment_count": 583, "start_date": "2012-10-24", "completion_date": "2018-09-06", "has_results": true, "last_update_posted_date": "2019-09-20", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 41, "location_summary": "Los Angeles, California • Sacramento, California • Washington D.C., District of Columbia + 31 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "Sacramento", "state": "California" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "Ft. Pierce", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01705574" }, { "nct_id": "NCT05438602", "title": "A Study to Learn About the Study Medicines (Nirmatrelvir Plus Ritonavir) in People Aged 12 Years or Older With COVID-19 and a Compromised Immune System", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "COVID-19" ], "interventions": [ { "name": "Nirmatrelvir", "type": "DRUG" }, { "name": "Ritonavir", "type": "DRUG" }, { "name": "Placebo for nirmatrelvir", "type": "DRUG" }, { "name": "Placebo for ritonavir", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": null, "sex": "ALL", "summary": "12 Years and older" }, "enrollment_count": 158, "start_date": "2022-08-03", "completion_date": "2023-11-13", "has_results": true, "last_update_posted_date": "2024-09-23", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 25, "location_summary": "San Francisco, California • Washington D.C., District of Columbia • Doral, Florida + 15 more", "locations": [ { "city": "San Francisco", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "Doral", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT05438602" }, { "nct_id": "NCT00244712", "title": "Abacavir/Lamivudine Versus Emtricitabine/Tenofovir Both In Combination With Lopinavir/Ritonavir For The Treatment Of HIV", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "HIV Infection" ], "interventions": [ { "name": "emtricitabine/tenofovir", "type": "DRUG" }, { "name": "abacavir/lamivudine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "GlaxoSmithKline", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 688, "start_date": "2005-07", "completion_date": "2008-04", "has_results": true, "last_update_posted_date": "2010-06-08", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 72, "location_summary": "Phoenix, Arizona • Tucson, Arizona • Beverly Hills, California + 52 more", "locations": [ { "city": "Phoenix", "state": "Arizona" }, { "city": "Phoenix", "state": "Arizona" }, { "city": "Tucson", "state": "Arizona" }, { "city": "Beverly Hills", "state": "California" }, { "city": "Fountain Valley", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00244712" }, { "nct_id": "NCT01278134", "title": "A Study of RO5024048 in Combination With Ritonavir-Boosted Danoprevir With or Without Copegus (Ribavirin) in Interferon-Naïve Patients With Chronic Hepatitis C Genotype 1 (INFORM-SVR)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis C, Chronic" ], "interventions": [ { "name": "Copegus placebo", "type": "DRUG" }, { "name": "RO5024048", "type": "DRUG" }, { "name": "danoprevir", "type": "DRUG" }, { "name": "peginterferon alfa-2a [Pegasys]", "type": "DRUG" }, { "name": "ribavirin [Copegus]", "type": "DRUG" }, { "name": "ritonavir", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Hoffmann-La Roche", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 170, "start_date": "2011-02", "completion_date": "2012-10", "has_results": false, "last_update_posted_date": "2016-11-02", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 18, "location_summary": "La Jolla, California • Sacramento, California • Orlando, Florida + 14 more", "locations": [ { "city": "La Jolla", "state": "California" }, { "city": "Sacramento", "state": "California" }, { "city": "Orlando", "state": "Florida" }, { "city": "Marietta", "state": "Georgia" }, { "city": "Honolulu", "state": "Hawaii" } ], "official_url": "https://clinicaltrials.gov/study/NCT01278134" }, { "nct_id": "NCT05545319", "title": "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", "overall_status": "WITHDRAWN", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)", "Coronavirus Disease 2019 (COVID-19)", "Immunocompromised", "Hospitalization", "Child, Hospitalized" ], "interventions": [ { "name": "Nirmatrelvir", "type": "DRUG" }, { "name": "Ritonavir", "type": "DRUG" }, { "name": "Placebo for nirmatrelvir", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": null, "sex": "ALL", "summary": "12 Years and older" }, "enrollment_count": 0, "start_date": "2022-12-13", "completion_date": "2024-01-06", "has_results": false, "last_update_posted_date": "2023-03-01", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 2, "location_summary": "Cooperstown, New York • New York, New York", "locations": [ { "city": "Cooperstown", "state": "New York" }, { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT05545319" }, { "nct_id": "NCT07597902", "title": "SARS-CoV-2 and Herpesvirus Inhibition for Ending Long COVID Dysfunction", "overall_status": "NOT_YET_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Post-acute Sequelae of COVID-19", "Long COVID" ], "interventions": [ { "name": "Valacyclovir", "type": "DRUG" }, { "name": "Celecoxib", "type": "DRUG" }, { "name": "Paxlovid", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Icahn School of Medicine at Mount Sinai", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 150, "start_date": "2026-06-01", "completion_date": "2028-06-30", "has_results": false, "last_update_posted_date": "2026-05-19", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 1, "location_summary": "New York, New York", "locations": [ { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT07597902" }, { "nct_id": "NCT00708162", "title": "Multicenter, Randomized, Double-Blind, Double-Dummy, Phase 3 Study of the Safety and Efficacy of Elvitegravir Versus Raltegravir", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "HIV Infection" ], "interventions": [ { "name": "Elvitegravir", "type": "DRUG" }, { "name": "Raltegravir", "type": "DRUG" }, { "name": "EVG placebo", "type": "DRUG" }, { "name": "RAL placebo", "type": "DRUG" }, { "name": "Background regimen", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 724, "start_date": "2008-07", "completion_date": "2015-04", "has_results": true, "last_update_posted_date": "2016-05-30", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 94, "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Beverly Hills, California + 59 more", "locations": [ { "city": "Phoenix", "state": "Arizona" }, { "city": "Little Rock", "state": "Arkansas" }, { "city": "Beverly Hills", "state": "California" }, { "city": "Beverly Hills", "state": "California" }, { "city": "Fountain Valley", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00708162" }, { "nct_id": "NCT00197145", "title": "Study Of Chemokine Coreceptor 5 (CCR5) Antagonist GW873140 In R5-Tropic Treatment-Experienced HIV-Infected Subjects", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Infection, Human Immunodeficiency Virus I" ], "interventions": [ { "name": "GW873140", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "ViiV Healthcare", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 24, "start_date": "2005-07-21", "completion_date": "2007-09-11", "has_results": true, "last_update_posted_date": "2018-11-02", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 52, "location_summary": "Birmingham, Alabama • Beverly Hills, California • Fountain Valley, California + 43 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Beverly Hills", "state": "California" }, { "city": "Fountain Valley", "state": "California" }, { "city": "Laguna Beach", "state": "California" }, { "city": "Long Beach", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00197145" }, { "nct_id": "NCT01802918", "title": "Single Dose Escalation Study of GSK2838232 in Healthy Subjects", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Infection, Human Immunodeficiency Virus" ], "interventions": [ { "name": "GSK2838232", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" }, { "name": "Ritonavir", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "GlaxoSmithKline", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "50 Years", "sex": "ALL", "summary": "18 Years to 50 Years" }, "enrollment_count": 17, "start_date": "2013-02-18", "completion_date": "2013-11-21", "has_results": false, "last_update_posted_date": "2017-05-09", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 1, "location_summary": "Baltimore, Maryland", "locations": [ { "city": "Baltimore", "state": "Maryland" } ], "official_url": "https://clinicaltrials.gov/study/NCT01802918" }, { "nct_id": "NCT02556268", "title": "Interaction With HIV Antiretroviral Agents", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "HIV-DDI" ], "interventions": [ { "name": "Riociguat (Adempas, BAY 63-2521)", "type": "DRUG" }, { "name": "ATRIPLA", "type": "DRUG" }, { "name": "COMPLERA", "type": "DRUG" }, { "name": "STRIBILD", "type": "DRUG" }, { "name": "TRIUMEQ", "type": "DRUG" }, { "name": "Antiretroviral protease inhibitor", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Bayer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 40, "start_date": "2016-02-23", "completion_date": "2016-12-07", "has_results": false, "last_update_posted_date": "2017-12-06", "last_synced_at": "2026-10-04T08:09:27.734Z", "location_count": 2, "location_summary": "Orlando, Florida • Boston, Massachusetts", "locations": [ { "city": "Orlando", "state": "Florida" }, { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT02556268" } ] }