{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Olanzapine%2C+risperidone", "query": { "intervention": "Olanzapine, risperidone" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 74, "total_pages": 8, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Olanzapine%2C+risperidone&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-09-28T08:56:14.725Z", "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": "NCT00806234", "title": "Reducing Weight Gain and Improving Metabolic Function in Children Being Treated With Antipsychotics", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Psychotic Disorders" ], "interventions": [ { "name": "Aripiprazole or Perphenazine", "type": "DRUG" }, { "name": "Metformin", "type": "DRUG" }, { "name": "Olanzapine, quetiapine, risperidone, ziprasidone, aripiprazole, asenapine, iloperidone, lurasidone, paliperidone, or olanzapine/fluoxetine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Johns Hopkins University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "8 Years", "maximum_age": "19 Years", "sex": "ALL", "summary": "8 Years to 19 Years" }, "enrollment_count": 127, "start_date": "2009-01", "completion_date": "2014-03", "has_results": true, "last_update_posted_date": "2017-04-25", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 4, "location_summary": "Baltimore, Maryland • Glen Oaks, New York • Chapel Hill, North Carolina", "locations": [ { "city": "Baltimore", "state": "Maryland" }, { "city": "Baltimore", "state": "Maryland" }, { "city": "Glen Oaks", "state": "New York" }, { "city": "Chapel Hill", "state": "North Carolina" } ], "official_url": "https://clinicaltrials.gov/study/NCT00806234" }, { "nct_id": "NCT00181935", "title": "Risperidone Versus Olanzapine for Mania in Preschool Children 4 to 6 Years of Age With Bipolar Disorder", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Bipolar Disorder", "Mania" ], "interventions": [ { "name": "risperidone (Risperdal)", "type": "DRUG" }, { "name": "olanzapine (Zyprexa)", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Massachusetts General Hospital", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "4 Years", "maximum_age": "6 Years", "sex": "ALL", "summary": "4 Years to 6 Years" }, "enrollment_count": 40, "start_date": "2001-03", "completion_date": "2004-07", "has_results": false, "last_update_posted_date": "2013-05-06", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 1, "location_summary": "Boston, Massachusetts", "locations": [ { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT00181935" }, { "nct_id": "NCT02087579", "title": "Parallel Group, Multiple Dose Pharmacokinetics Study of Five Antipsychotic Medications in Psychiatric Participants", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Psychotic Disorders", "Schizophrenia", "Bipolar Disorder", "Depressive Disorder" ], "interventions": [ { "name": "Aripiprazole, oral formulation", "type": "DRUG" }, { "name": "Olanzapine, oral formulation", "type": "DRUG" }, { "name": "Paliperidone, oral formulation", "type": "DRUG" }, { "name": "Paliperidone, LAI", "type": "DRUG" }, { "name": "Quetiapine, oral formulation", "type": "DRUG" }, { "name": "Risperidone, oral formulation", "type": "DRUG" }, { "name": "Risperidone, LAI", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Janssen Research & Development, LLC", "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": 305, "start_date": "2014-02", "completion_date": "2014-12", "has_results": false, "last_update_posted_date": "2015-10-29", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 6, "location_summary": "Garden Grove, California • Kissimmee, Florida • Atlanta, Georgia + 3 more", "locations": [ { "city": "Garden Grove", "state": "California" }, { "city": "Kissimmee", "state": "Florida" }, { "city": "Atlanta", "state": "Georgia" }, { "city": "Hoffman Estates", "state": "Illinois" }, { "city": "Cedarhurst", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT02087579" }, { "nct_id": "NCT01786369", "title": "Adherence in Patients Admitted to a Psychiatric Unit for Acute Psychosis: an Analysis of Serum Levels of Antipsychotics.", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Schizophrenia", "Schizoaffective Disorder", "Bipolar Disorder" ], "interventions": [], "intervention_types": [], "sponsor": "Northwell Health", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 106, "start_date": "2013-02", "completion_date": "2015-04", "has_results": false, "last_update_posted_date": "2015-04-14", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 1, "location_summary": "Glen Oaks, New York", "locations": [ { "city": "Glen Oaks", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT01786369" }, { "nct_id": "NCT00225498", "title": "Neurocognitive Effects of Ziprasidone: Relationship to Working Memory and Dopamine Blockade", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Schizophrenia" ], "interventions": [ { "name": "ziprasidone vs risperidone or olanzapine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Northwell Health", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "50 Years", "sex": "ALL", "summary": "18 Years to 50 Years" }, "enrollment_count": 35, "start_date": "2002-06", "completion_date": "2008-10", "has_results": true, "last_update_posted_date": "2015-09-10", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 1, "location_summary": "Glen Oaks, New York", "locations": [ { "city": "Glen Oaks", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT00225498" }, { "nct_id": "NCT00018668", "title": "Antipsychotic Response in Schizophrenia", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Schizophrenia" ], "interventions": [ { "name": "Risperidone", "type": "DRUG" }, { "name": "Olanzapine", "type": "DRUG" }, { "name": "Quetiapine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "US Department of Veterans Affairs", "sponsor_class": "FED", "healthy_volunteers": false, "eligibility": { "minimum_age": "21 Years", "maximum_age": "70 Years", "sex": "ALL", "summary": "21 Years to 70 Years" }, "enrollment_count": null, "start_date": "2000-10", "completion_date": "2004-09", "has_results": false, "last_update_posted_date": "2009-01-21", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 1, "location_summary": "San Diego, California", "locations": [ { "city": "San Diego", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00018668" }, { "nct_id": "NCT05402111", "title": "A Clinical Study That Will Assess How Food Moves Through the Stomach and Effects Blood Glucose Levels in Subjects With Schizophrenia Taking SEP-363856 or and Prior Antipsychotic (PA) Standard", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Schizophrenia" ], "interventions": [ { "name": "SEP-363856", "type": "DRUG" }, { "name": "Prior antipsychotic (risperidone, olanzapine, quetiapine or aripiprazole)", "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": 31, "start_date": "2022-06-13", "completion_date": "2023-09-27", "has_results": false, "last_update_posted_date": "2024-06-26", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 7, "location_summary": "Little Rock, Arkansas • Rogers, Arkansas • Long Beach, California + 4 more", "locations": [ { "city": "Little Rock", "state": "Arkansas" }, { "city": "Rogers", "state": "Arkansas" }, { "city": "Long Beach", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "Hialeah", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT05402111" }, { "nct_id": "NCT00330863", "title": "Preventing Relapse in Schizophrenia: Oral Antipsychotics Compared To Injectables: Evaluating Efficacy", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Schizophrenia", "Schizoaffective Disorder" ], "interventions": [ { "name": "Risperidone microspheres", "type": "DRUG" }, { "name": "Risperidone", "type": "DRUG" }, { "name": "Olanzapine", "type": "DRUG" }, { "name": "Quetiapine", "type": "DRUG" }, { "name": "Ziprasidone", "type": "DRUG" }, { "name": "Aripiprazole", "type": "DRUG" }, { "name": "Paliperidone", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Northwell Health", "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": 357, "start_date": "2006-05", "completion_date": "2011-01", "has_results": true, "last_update_posted_date": "2018-07-10", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 8, "location_summary": "Los Angeles, California • Augusta, Georgia • Iowa City, Iowa + 5 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "Augusta", "state": "Georgia" }, { "city": "Iowa City", "state": "Iowa" }, { "city": "Boston", "state": "Massachusetts" }, { "city": "Fall River", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT00330863" }, { "nct_id": "NCT01157351", "title": "15 Month Study for Adults Who Have Been Diagnosed With Schizophrenia and Incarcerated", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Schizophrenia" ], "interventions": [ { "name": "paliperidone", "type": "DRUG" }, { "name": "risperidone", "type": "DRUG" }, { "name": "haloperidole", "type": "DRUG" }, { "name": "perphenazine", "type": "DRUG" }, { "name": "aripiprazole", "type": "DRUG" }, { "name": "quetiapine", "type": "DRUG" }, { "name": "paliperidone palmitate", "type": "DRUG" }, { "name": "olanzapine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Janssen Scientific Affairs, LLC", "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": 450, "start_date": "2010-05", "completion_date": "2013-12", "has_results": true, "last_update_posted_date": "2015-04-24", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 55, "location_summary": "Bullhead City, Arizona • Tuscon, Arizona • Little Rock, Arkansas + 52 more", "locations": [ { "city": "Bullhead City", "state": "Arizona" }, { "city": "Tuscon", "state": "Arizona" }, { "city": "Little Rock", "state": "Arkansas" }, { "city": "Anaheim", "state": "California" }, { "city": "Escondido", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT01157351" }, { "nct_id": "NCT00006195", "title": "Glucose Regulation During Risperidone and Olanzapine Treatment", "overall_status": "UNKNOWN", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Schizophrenia" ], "interventions": [ { "name": "risperidone", "type": "DRUG" }, { "name": "olanzapine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Center for Research Resources (NCRR)", "sponsor_class": "NIH", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "60 Years", "sex": "ALL", "summary": "18 Years to 60 Years" }, "enrollment_count": null, "start_date": null, "completion_date": null, "has_results": false, "last_update_posted_date": "2006-10-12", "last_synced_at": "2026-09-28T08:56:14.725Z", "location_count": 1, "location_summary": "St Louis, Missouri", "locations": [ { "city": "St Louis", "state": "Missouri" } ], "official_url": "https://clinicaltrials.gov/study/NCT00006195" } ] }