{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Double-dummy+placebo", "query": { "intervention": "Double-dummy placebo" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 369, "total_pages": 37, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Double-dummy+placebo&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-09-13T20:24:58.940Z", "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": "NCT01147458", "title": "A Study Of The Safety And Efficacy Of PF-04191834 In Patients With Osteoarthritis Of The Knee", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Osteoarthritis, Knee" ], "interventions": [ { "name": "PF-04191834", "type": "DRUG" }, { "name": "PF-04191834 placebo", "type": "DRUG" }, { "name": "Naproxen placebo", "type": "DRUG" }, { "name": "Naproxen", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "18 Years to 75 Years" }, "enrollment_count": 190, "start_date": "2010-07", "completion_date": "2011-02", "has_results": true, "last_update_posted_date": "2013-06-06", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 25, "location_summary": "Peoria, Arizona • Phoenix, Arizona • Anaheim, California + 20 more", "locations": [ { "city": "Peoria", "state": "Arizona" }, { "city": "Phoenix", "state": "Arizona" }, { "city": "Phoenix", "state": "Arizona" }, { "city": "Anaheim", "state": "California" }, { "city": "Carmichael", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT01147458" }, { "nct_id": "NCT02031640", "title": "A Safety and Efficacy Study of Beclomethasone Dipropionate Delivered Via Breath-Actuated Inhaler (BAI) or Metered-Dose Inhaler (MDI) in Participants >=12 Years Old With Persistent Asthma", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Asthma" ], "interventions": [ { "name": "Beclomethasone dipropionate", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" }, { "name": "Albuterol/salbutamol", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": null, "sex": "ALL", "summary": "12 Years and older" }, "enrollment_count": 1113, "start_date": "2013-12", "completion_date": "2014-12", "has_results": true, "last_update_posted_date": "2021-11-09", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 94, "location_summary": "Costa Mesa, California • Huntington Beach, California • Long Beach, California + 77 more", "locations": [ { "city": "Costa Mesa", "state": "California" }, { "city": "Huntington Beach", "state": "California" }, { "city": "Huntington Beach", "state": "California" }, { "city": "Long Beach", "state": "California" }, { "city": "Los Angeles", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT02031640" }, { "nct_id": "NCT01879410", "title": "A Study to Compare the Efficacy and Safety of Umeclidinium/Vilanterol With Fluticasone Propionate/Salmeterol in Subjects With Chronic Obstructive Pulmonary Disease (COPD)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Pulmonary Disease, Chronic Obstructive" ], "interventions": [ { "name": "UMEC/VI Inhalation Powder 62.5/25 mcg via NDPI", "type": "DRUG" }, { "name": "FSC Inhalation Powder 250/50 mcg via ACCUHALER/DISKUS", "type": "DRUG" }, { "name": "Placebo DISKUS", "type": "DRUG" }, { "name": "Placebo NDPI", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "GlaxoSmithKline", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "40 Years", "maximum_age": null, "sex": "ALL", "summary": "40 Years and older" }, "enrollment_count": 700, "start_date": "2013-06-13", "completion_date": "2014-01-09", "has_results": true, "last_update_posted_date": "2017-11-08", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 15, "location_summary": "Tucson, Arizona • Newport Beach, California • Riverside, California + 12 more", "locations": [ { "city": "Tucson", "state": "Arizona" }, { "city": "Newport Beach", "state": "California" }, { "city": "Riverside", "state": "California" }, { "city": "DeLand", "state": "Florida" }, { "city": "Coeur d'Alene", "state": "Idaho" } ], "official_url": "https://clinicaltrials.gov/study/NCT01879410" }, { "nct_id": "NCT02874794", "title": "Study of Effects of Sacubitril/Valsartan vs. Enalapril on Aortic Stiffness in Patients With Mild to Moderate HF With Reduced Ejection Fraction", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Heart Failure and Reduced Ejection Fraction" ], "interventions": [ { "name": "LCZ696 (sacubitril/valsartan)", "type": "DRUG" }, { "name": "Enalapril", "type": "DRUG" }, { "name": "Placebo of Enalapril", "type": "DRUG" }, { "name": "Placebo of LCZ696", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Novartis Pharmaceuticals", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "50 Years", "maximum_age": null, "sex": "ALL", "summary": "50 Years and older" }, "enrollment_count": 465, "start_date": "2016-08-17", "completion_date": "2019-01-26", "has_results": true, "last_update_posted_date": "2021-01-05", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 81, "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Beverly Hills, California + 69 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Little Rock", "state": "Arkansas" }, { "city": "Beverly Hills", "state": "California" }, { "city": "Huntington Beach", "state": "California" }, { "city": "Newport Beach", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT02874794" }, { "nct_id": "NCT00424931", "title": "A Safety and Effectiveness Study of a Single Dose of JNJ-17216498 in Patients With Narcolepsy", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Narcolepsy" ], "interventions": [ { "name": "JNJ-17216498", "type": "DRUG" }, { "name": "Modafinil", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Alza Corporation, DE, USA", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "55 Years", "sex": "ALL", "summary": "18 Years to 55 Years" }, "enrollment_count": 16, "start_date": "2007-01", "completion_date": "2007-12", "has_results": false, "last_update_posted_date": "2014-05-23", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 16, "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 13 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Phoenix", "state": "Arizona" }, { "city": "Tucson", "state": "Arizona" }, { "city": "San Diego", "state": "California" }, { "city": "Stanford", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00424931" }, { "nct_id": "NCT01512160", "title": "Efficacy Of Pf-04531083 In Treating Post-Surgical Dental Pain", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Post-surgical Dental Pain" ], "interventions": [ { "name": "PF-04531083", "type": "DRUG" }, { "name": "Placebo", "type": "OTHER" }, { "name": "Ibuprofen", "type": "DRUG" } ], "intervention_types": [ "DRUG", "OTHER" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "55 Years", "sex": "MALE", "summary": "18 Years to 55 Years · Male only" }, "enrollment_count": 90, "start_date": "2011-10", "completion_date": "2012-05", "has_results": true, "last_update_posted_date": "2013-06-28", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 1, "location_summary": "Austin, Texas", "locations": [ { "city": "Austin", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT01512160" }, { "nct_id": "NCT01787357", "title": "A Study to Assess Electrocardiogram Results in Healthy Volunteers Receiving Canagliflozin (JNJ-28431754)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy" ], "interventions": [ { "name": "Canagliflozin (JNJ-28431754)", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" }, { "name": "Moxifloxacin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Johnson & Johnson Pharmaceutical Research & Development, L.L.C.", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "55 Years", "sex": "ALL", "summary": "18 Years to 55 Years" }, "enrollment_count": 60, "start_date": "2008-06", "completion_date": "2008-09", "has_results": false, "last_update_posted_date": "2016-06-29", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 1, "location_summary": "Tempe, Arizona", "locations": [ { "city": "Tempe", "state": "Arizona" } ], "official_url": "https://clinicaltrials.gov/study/NCT01787357" }, { "nct_id": "NCT02964338", "title": "A Study Comparing the Efficacy and Safety of Fremanezumab (TEV-48125) for the Prevention of Chronic Cluster Headache (CCH)", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Chronic Cluster Headache" ], "interventions": [ { "name": "Fremanezumab", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "70 Years", "sex": "ALL", "summary": "18 Years to 70 Years" }, "enrollment_count": 259, "start_date": "2017-01-17", "completion_date": "2018-07-18", "has_results": true, "last_update_posted_date": "2021-11-09", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 32, "location_summary": "Phoenix, Arizona • Canoga Park, California • Santa Monica, California + 28 more", "locations": [ { "city": "Phoenix", "state": "Arizona" }, { "city": "Canoga Park", "state": "California" }, { "city": "Santa Monica", "state": "California" }, { "city": "Stanford", "state": "California" }, { "city": "Aurora", "state": "Colorado" } ], "official_url": "https://clinicaltrials.gov/study/NCT02964338" }, { "nct_id": "NCT03474081", "title": "A Comparative Study Between Fluticasone Furoate/Umeclidinium/Vilanterol (FF/UMEC/VI) Single Inhaler Triple Therapy Versus Tiotropium Monotherapy in Subjects With Chronic Obstructive Pulmonary Disease (COPD)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Pulmonary Disease, Chronic Obstructive" ], "interventions": [ { "name": "FF/UMEC/VI", "type": "DRUG" }, { "name": "Tiotropium", "type": "DRUG" }, { "name": "Albuterol/salbutamol", "type": "DRUG" }, { "name": "Placebo to match FF/UMEC/VI", "type": "DRUG" }, { "name": "Placebo to match tiotropium", "type": "DRUG" }, { "name": "ELLIPTA inhaler", "type": "DEVICE" }, { "name": "HANDIHALER", "type": "DEVICE" }, { "name": "MDI", "type": "DEVICE" } ], "intervention_types": [ "DRUG", "DEVICE" ], "sponsor": "GlaxoSmithKline", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "40 Years", "maximum_age": null, "sex": "ALL", "summary": "40 Years and older" }, "enrollment_count": 800, "start_date": "2018-03-29", "completion_date": "2019-07-17", "has_results": true, "last_update_posted_date": "2021-07-15", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 33, "location_summary": "Andalusia, Alabama • Huntington Beach, California • Sacramento, California + 29 more", "locations": [ { "city": "Andalusia", "state": "Alabama" }, { "city": "Huntington Beach", "state": "California" }, { "city": "Sacramento", "state": "California" }, { "city": "Simi Valley", "state": "California" }, { "city": "Colorado Springs", "state": "Colorado" } ], "official_url": "https://clinicaltrials.gov/study/NCT03474081" }, { "nct_id": "NCT00475800", "title": "Efficacy and Safety of Lumiracoxib in Patients With Primary Knee Osteoarthritis(OA)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Osteoarthritis" ], "interventions": [ { "name": "Lumiracoxib", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Novartis", "sponsor_class": "INDUSTRY", "healthy_volunteers": null, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 833, "start_date": "2004-01", "completion_date": null, "has_results": false, "last_update_posted_date": "2012-05-21", "last_synced_at": "2026-09-13T20:24:58.940Z", "location_count": 5, "location_summary": "Tucson, Arizona • Brooklyn Park, Minnesota • Albuquerque, New Mexico + 2 more", "locations": [ { "city": "Tucson", "state": "Arizona" }, { "city": "Brooklyn Park", "state": "Minnesota" }, { "city": "Albuquerque", "state": "New Mexico" }, { "city": "Sioux Falls", "state": "South Dakota" }, { "city": "San Antonio", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT00475800" } ] }