{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tretinoin+Gel+%28tretinoin%29", "query": { "intervention": "Tretinoin Gel (tretinoin)" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 28, "total_pages": 3, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tretinoin+Gel+%28tretinoin%29&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-10-09T18:16:51.688Z", "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": "NCT00907257", "title": "A Study of Different Use Regimens Using Two Acne Treatments", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Acne Vulgaris" ], "interventions": [ { "name": "benzoyl peroxide wash", "type": "DRUG" }, { "name": "Tretinoin gel", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Bausch Health Americas, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": null, "sex": "ALL", "summary": "12 Years and older" }, "enrollment_count": 247, "start_date": "2009-02", "completion_date": "2009-09", "has_results": true, "last_update_posted_date": "2012-02-15", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 12, "location_summary": "Boca Raton, Florida • Miami, Florida • Snellville, Georgia + 9 more", "locations": [ { "city": "Boca Raton", "state": "Florida" }, { "city": "Miami", "state": "Florida" }, { "city": "Snellville", "state": "Georgia" }, { "city": "Louisville", "state": "Kentucky" }, { "city": "Fridley", "state": "Minnesota" } ], "official_url": "https://clinicaltrials.gov/study/NCT00907257" }, { "nct_id": "NCT00841776", "title": "Comparative Antimicrobial Efficacy of Two Topical Acne Therapies for the Treatment of Facial Acne", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Acne" ], "interventions": [ { "name": "Duac", "type": "DRUG" }, { "name": "Ziana gel", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Stiefel, a GSK Company", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": null, "sex": "ALL", "summary": "12 Years and older" }, "enrollment_count": 54, "start_date": "2007-08", "completion_date": "2009-01", "has_results": true, "last_update_posted_date": "2017-05-25", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 2, "location_summary": "Louisville, Kentucky • Mason, Ohio", "locations": [ { "city": "Louisville", "state": "Kentucky" }, { "city": "Mason", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT00841776" }, { "nct_id": "NCT01313728", "title": "A Study That Evaluates the Decrease in Irritation When Using Additional Acne Treatment Products", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Acne Vulgaris" ], "interventions": [ { "name": "Dapsone plus Tretinoin Gel", "type": "DRUG" }, { "name": "Tretinoin Gel", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Bausch Health Americas, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "40 Years", "sex": "ALL", "summary": "18 Years to 40 Years" }, "enrollment_count": 26, "start_date": "2010-12", "completion_date": "2011-01", "has_results": true, "last_update_posted_date": "2012-02-15", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Broomall, Pennsylvania", "locations": [ { "city": "Broomall", "state": "Pennsylvania" } ], "official_url": "https://clinicaltrials.gov/study/NCT01313728" }, { "nct_id": "NCT00835198", "title": "Dapsone Gel 5% and Tretinoin Gel 0.025% Versus Tretinoin Gel 0.025% Monotherapy for Facial Acne Vulgaris", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Acne Vulgaris" ], "interventions": [ { "name": "Dapsone; Tretinoin", "type": "DRUG" }, { "name": "Tretinoin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Allergan", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": null, "sex": "ALL", "summary": "12 Years and older" }, "enrollment_count": 163, "start_date": "2008-12", "completion_date": "2009-08", "has_results": true, "last_update_posted_date": "2011-10-31", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Strongsville, Ohio", "locations": [ { "city": "Strongsville", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT00835198" }, { "nct_id": "NCT01522456", "title": "Split-face Tolerability Comparison Between Adapalene-Benzoyl Peroxide Gel Versus Tretinoin Gel", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Acne Vulgaris" ], "interventions": [ { "name": "Epiduo Gel", "type": "DRUG" }, { "name": "Retin-A Micro Microsphere 0.1%", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Galderma R&D", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 73, "start_date": "2012-04", "completion_date": "2012-05", "has_results": true, "last_update_posted_date": "2022-08-01", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Dallas, Texas", "locations": [ { "city": "Dallas", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT01522456" }, { "nct_id": "NCT01135069", "title": "Bioequivalence Study of Generic Tretinoin 0.1% Microsphere Gel, 0.1% Retin-A Micro® and Placebo", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Acne" ], "interventions": [ { "name": "Tretinoin microsphere 0.1%", "type": "DRUG" }, { "name": "Brand Retin-A Micro tretinoin microsphere gel 0.1%", "type": "DRUG" }, { "name": "placebo microsphere gel", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Spear Pharmaceuticals", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "12 Years", "maximum_age": "40 Years", "sex": "ALL", "summary": "12 Years to 40 Years" }, "enrollment_count": 480, "start_date": "2009-10", "completion_date": "2010-04", "has_results": true, "last_update_posted_date": "2014-10-27", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Land O' Lakes, Florida", "locations": [ { "city": "Land O' Lakes", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01135069" }, { "nct_id": "NCT04883736", "title": "A Study Comparing Tretinoin Gel Microsphere, 0.1% and RETIN-A MICRO ® Gel Microsphere, 0.1% in the Treatment of Acne Vulgaris", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "EARLY_PHASE1" ], "conditions": [ "Acne Vulgaris" ], "interventions": [ { "name": "Tretinoin Gel Microsphere, 0.1%", "type": "DRUG" }, { "name": "RETIN-A MICRO® (Tretinoin) Gel Microsphere, 0.1%", "type": "DRUG" }, { "name": "Placebo Control", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Sun Pharmaceutical Industries, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "12 Years", "maximum_age": "40 Years", "sex": "ALL", "summary": "12 Years to 40 Years" }, "enrollment_count": 973, "start_date": "2020-08-31", "completion_date": "2021-04-16", "has_results": false, "last_update_posted_date": "2021-05-12", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Charlotte, North Carolina", "locations": [ { "city": "Charlotte", "state": "North Carolina" } ], "official_url": "https://clinicaltrials.gov/study/NCT04883736" }, { "nct_id": "NCT07469228", "title": "A Study Comparing Tretinoin Gel Microsphere, 0.04% and RETIN-A MICRO ® Gel Microsphere, 0.04% in the Treatment of Acne Vulgaris", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Acne Vulgaris" ], "interventions": [ { "name": "Tretinoin Gel Microsphere, 0.04%", "type": "DRUG" }, { "name": "RETIN-A MICRO® (Tretinoin) Gel Microsphere, 0.04%", "type": "DRUG" }, { "name": "Placebo Control", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Sun Pharmaceutical Industries, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "12 Years", "maximum_age": "40 Years", "sex": "ALL", "summary": "12 Years to 40 Years" }, "enrollment_count": 1043, "start_date": "2025-08-04", "completion_date": "2025-12-15", "has_results": false, "last_update_posted_date": "2026-03-13", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Hawthorne, New York", "locations": [ { "city": "Hawthorne", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT07469228" }, { "nct_id": "NCT00621218", "title": "A Study to Determine the Safety and Efficacy of Atralin (Tretinoin 0.05%) Gel for the Treatment of Rosacea", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Rosacea" ], "interventions": [ { "name": "tretinoin gel 0.05%", "type": "DRUG" }, { "name": "vehicle", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Coria Laboratories, Ltd.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "FEMALE", "summary": "18 Years to 65 Years · Female only" }, "enrollment_count": 36, "start_date": "2008-02", "completion_date": "2008-12", "has_results": false, "last_update_posted_date": "2008-12-18", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Conshohocken, Pennsylvania", "locations": [ { "city": "Conshohocken", "state": "Pennsylvania" } ], "official_url": "https://clinicaltrials.gov/study/NCT00621218" }, { "nct_id": "NCT00604032", "title": "Study to Determine the Phototoxity of Atralin (Tretinoin) Gel, 0.05%", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy" ], "interventions": [ { "name": "Atralin (tretinoin) Gel, 0.05%", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Coria Laboratories, Ltd.", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 60, "start_date": "2008-01", "completion_date": "2008-02", "has_results": false, "last_update_posted_date": "2008-03-28", "last_synced_at": "2026-10-09T18:16:51.688Z", "location_count": 1, "location_summary": "Winston-Salem, North Carolina", "locations": [ { "city": "Winston-Salem", "state": "North Carolina" } ], "official_url": "https://clinicaltrials.gov/study/NCT00604032" } ] }