{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Quetiapine+XR&page=2", "query": { "intervention": "Quetiapine XR", "page": 2 }, "page_size": 10 }, "pagination": { "page": 2, "page_size": 10, "total_count": 38, "total_pages": 4, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Quetiapine+XR&page=3&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Quetiapine+XR&page=1&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-04T14:45:00.554Z", "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": "NCT02893371", "title": "Longitudinal Comparative Effectiveness of Bipolar Disorder Therapies", "overall_status": "TERMINATED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Bipolar Disorder" ], "interventions": [ { "name": "Lithium Carbonate", "type": "DRUG" }, { "name": "Lamotrigine", "type": "DRUG" }, { "name": "Valproic Acid", "type": "DRUG" }, { "name": "Oxcarbazepine", "type": "DRUG" }, { "name": "Carbamazepine", "type": "DRUG" }, { "name": "Ziprasidone", "type": "DRUG" }, { "name": "Risperidone", "type": "DRUG" }, { "name": "Quetiapine", "type": "DRUG" }, { "name": "Olanzapine", "type": "DRUG" }, { "name": "Aripiprazole", "type": "DRUG" }, { "name": "Fluoxetine / Olanzapine", "type": "DRUG" }, { "name": "Haloperidol", "type": "DRUG" }, { "name": "Perphenazine", "type": "DRUG" }, { "name": "Clozapine", "type": "DRUG" }, { "name": "Asenapine", "type": "DRUG" }, { "name": "Lurasidone", "type": "DRUG" }, { "name": "Paliperidone", "type": "DRUG" }, { "name": "Mirtazapine", "type": "DRUG" }, { "name": "Bupropion", "type": "DRUG" }, { "name": "Desvenlafaxine", "type": "DRUG" }, { "name": "Duloxetine", "type": "DRUG" }, { "name": "Venlafaxine", "type": "DRUG" }, { "name": "Citalopram", "type": "DRUG" }, { "name": "Escitalopram", "type": "DRUG" }, { "name": "Fluoxetine", "type": "DRUG" }, { "name": "Fluvoxamine", "type": "DRUG" }, { "name": "Paroxetine", "type": "DRUG" }, { "name": "Sertraline", "type": "DRUG" }, { "name": "Vilazodone", "type": "DRUG" }, { "name": "Doxepin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "University of New Mexico", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": null, "maximum_age": null, "sex": "ALL", "summary": "Not listed" }, "enrollment_count": 1037352, "start_date": "2016-09", "completion_date": "2019-06-30", "has_results": false, "last_update_posted_date": "2024-03-12", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 1, "location_summary": "Albuquerque, New Mexico", "locations": [ { "city": "Albuquerque", "state": "New Mexico" } ], "official_url": "https://clinicaltrials.gov/study/NCT02893371" }, { "nct_id": "NCT00434876", "title": "The Effects of Quetiapine (Seroquel XR) on Sleep During Alcohol Abstinence", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Alcoholism", "Sleep Initiation and Maintenance Disorders" ], "interventions": [ { "name": "Quetiapine XR", "type": "DRUG" }, { "name": "Placebo.", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Subhajit Chakravorty", "sponsor_class": "FED", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 22, "start_date": "2007-08", "completion_date": "2009-12", "has_results": true, "last_update_posted_date": "2013-08-09", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 1, "location_summary": "Philadelphia, Pennsylvania", "locations": [ { "city": "Philadelphia", "state": "Pennsylvania" } ], "official_url": "https://clinicaltrials.gov/study/NCT00434876" }, { "nct_id": "NCT00868374", "title": "Quetiapine Extended Release (XR) Treatment of Major Depressive Disorder With Comorbid Generalized Anxiety Disorder", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Major Depressive Disorder", "Generalized Anxiety Disorder" ], "interventions": [ { "name": "Quetiapine XR", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Keming Gao", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "70 Years", "sex": "ALL", "summary": "18 Years to 70 Years" }, "enrollment_count": 23, "start_date": "2008-06", "completion_date": "2011-10", "has_results": true, "last_update_posted_date": "2016-12-29", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 1, "location_summary": "Cleveland, Ohio", "locations": [ { "city": "Cleveland", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT00868374" }, { "nct_id": "NCT00880919", "title": "Seroquel Extended Release (XR) for the Management of Borderline Personality Disorder (BPD)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Borderline Personality Disorder" ], "interventions": [ { "name": "quetiapine extended-release", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "University of Minnesota", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "45 Years", "sex": "ALL", "summary": "18 Years to 45 Years" }, "enrollment_count": 95, "start_date": "2008-06", "completion_date": "2013-03", "has_results": true, "last_update_posted_date": "2017-03-09", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 3, "location_summary": "Iowa City, Iowa • Belmont, Massachusetts • Minneapolis, Minnesota", "locations": [ { "city": "Iowa City", "state": "Iowa" }, { "city": "Belmont", "state": "Massachusetts" }, { "city": "Minneapolis", "state": "Minnesota" } ], "official_url": "https://clinicaltrials.gov/study/NCT00880919" }, { "nct_id": "NCT00671853", "title": "Quetiapine Extended Release (XR) in Bipolar Patients With Comorbid Generalized Anxiety Disorder (GAD)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Bipolar Disorder", "Anxiety", "Anxiety Disorders", "Substance Use Disorders" ], "interventions": [ { "name": "Quetiapine XR", "type": "DRUG" }, { "name": "Placebo for quetiapine XR", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "University Hospitals Cleveland Medical Center", "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": 120, "start_date": "2008-04", "completion_date": "2011-03", "has_results": true, "last_update_posted_date": "2016-12-29", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 1, "location_summary": "Cleveland, Ohio", "locations": [ { "city": "Cleveland", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT00671853" }, { "nct_id": "NCT01231074", "title": "Reducing Antipsychotic-Induced Weight Gain in Children With Metformin", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Obesity", "Weight Gain", "Psychotropic Induced Weight Gain" ], "interventions": [ { "name": "Metformin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Nationwide Children's Hospital", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "10 Years", "maximum_age": "17 Years", "sex": "ALL", "summary": "10 Years to 17 Years" }, "enrollment_count": 96, "start_date": "2010-02", "completion_date": "2013-05", "has_results": false, "last_update_posted_date": "2019-01-02", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 1, "location_summary": "Columbus, Ohio", "locations": [ { "city": "Columbus", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT01231074" }, { "nct_id": "NCT04513912", "title": "A Study of Seltorexant Compared to Quetiapine XR as Adjunctive Therapy to Antidepressants in Adult and Elderly Participants With Major Depressive Disorder With Insomnia Symptoms Who Have Responded Inadequately to Antidepressant Therapy", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Depressive Disorder, Major" ], "interventions": [ { "name": "Seltorexant", "type": "DRUG" }, { "name": "Matching placebo to Seltorexant", "type": "DRUG" }, { "name": "Quetiapine XR", "type": "DRUG" }, { "name": "Matching placebo to Quetiapine XR", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Janssen Research & Development, LLC", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "74 Years", "sex": "ALL", "summary": "18 Years to 74 Years" }, "enrollment_count": 757, "start_date": "2020-09-15", "completion_date": "2023-10-03", "has_results": false, "last_update_posted_date": "2025-08-13", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 75, "location_summary": "Birmingham, Alabama • Tucson, Arizona • Culver City, California + 62 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Tucson", "state": "Arizona" }, { "city": "Culver City", "state": "California" }, { "city": "Encino", "state": "California" }, { "city": "Garden Grove", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT04513912" }, { "nct_id": "NCT01200901", "title": "Quetiapine in Melancholic Depression", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Depression", "Healthy" ], "interventions": [ { "name": "Quetiapine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "University of Cincinnati", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 20, "start_date": "2008-09", "completion_date": "2012-09", "has_results": false, "last_update_posted_date": "2013-01-18", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 1, "location_summary": "Cincinnati, Ohio", "locations": [ { "city": "Cincinnati", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT01200901" }, { "nct_id": "NCT04115319", "title": "A Study of the Long-term Safety and Tolerability of an Investigational Drug in People With Schizophrenia.", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Schizophrenia" ], "interventions": [ { "name": "SEP363856", "type": "DRUG" }, { "name": "quetiapine XR", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Otsuka Pharmaceutical Development & Commercialization, Inc.", "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": 305, "start_date": "2019-11-21", "completion_date": "2022-12-30", "has_results": true, "last_update_posted_date": "2025-12-31", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 18, "location_summary": "Cerritos, California • Oakland, California • Oceanside, California + 15 more", "locations": [ { "city": "Cerritos", "state": "California" }, { "city": "Oakland", "state": "California" }, { "city": "Oceanside", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "Torrance", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT04115319" }, { "nct_id": "NCT01066143", "title": "Generalized Anxiety and Seroquel", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Generalized Anxiety Disorder", "Seroquel XR" ], "interventions": [ { "name": "Seroquel XR", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Mclean Hospital", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "55 Years", "sex": "ALL", "summary": "18 Years to 55 Years" }, "enrollment_count": 8, "start_date": "2010-02", "completion_date": "2013-02", "has_results": true, "last_update_posted_date": "2017-05-17", "last_synced_at": "2026-10-04T14:45:00.554Z", "location_count": 1, "location_summary": "Belmont, Massachusetts", "locations": [ { "city": "Belmont", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT01066143" } ] }