{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phentermine+37.5+Mg",
    "query": {
      "intervention": "Phentermine 37.5 Mg"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T11:08:05.548Z",
  "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": "NCT04614545",
      "title": "Comparing a Virtual vs. Face to Face Weight Management Program Using Phentermine for Patients With Overweight or Obesity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Phentermine 37.5 Mg",
          "type": "DRUG"
        },
        {
          "name": "Dietary program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exercise program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "The Cleveland Clinic",
      "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": 70,
      "start_date": "2021-01-01",
      "completion_date": "2022-09-29",
      "has_results": true,
      "last_update_posted_date": "2022-12-07",
      "last_synced_at": "2026-09-24T11:08:05.548Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04614545"
    },
    {
      "nct_id": "NCT04621929",
      "title": "Phentermine/Topiramate for Uric Acid Stones",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Obesity",
        "Uric Acid Stones",
        "Type 2 Diabetes Mellitus in Obese",
        "Pre-Diabetes"
      ],
      "interventions": [
        {
          "name": "Phentermine / Topiramate Oral Product",
          "type": "DRUG"
        },
        {
          "name": "Citrate Salts, Allopurinol, Diet",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 19,
      "start_date": "2021-03-31",
      "completion_date": "2024-11-14",
      "has_results": true,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-09-24T11:08:05.548Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04621929"
    },
    {
      "nct_id": "NCT01886937",
      "title": "Studying the Effects of Phentermine on Eating Behavior",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Phentermine",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "New York State Psychiatric Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 13,
      "start_date": "2012-07",
      "completion_date": "2014-06",
      "has_results": true,
      "last_update_posted_date": "2017-07-31",
      "last_synced_at": "2026-09-24T11:08:05.548Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01886937"
    },
    {
      "nct_id": "NCT00518466",
      "title": "Pharmacokinetic Comparison of Multiple Formulations of Topiramate and Phentermine in Obese Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "topiramate",
          "type": "DRUG"
        },
        {
          "name": "phentermine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VIVUS LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "19 Years to 65 Years"
      },
      "enrollment_count": 64,
      "start_date": "2007-07",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2011-06-08",
      "last_synced_at": "2026-09-24T11:08:05.548Z",
      "location_count": 1,
      "location_summary": "Mountain View, California",
      "locations": [
        {
          "city": "Mountain View",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00518466"
    },
    {
      "nct_id": "NCT07729332",
      "title": "Switching to Oral Weight Management Pharmacotherapy to Prevent Weight Regain After GLP-1 Therapy Discontinuation",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Phentermine Pill",
          "type": "DRUG"
        },
        {
          "name": "Orforglipron",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 60,
      "start_date": "2026-11-01",
      "completion_date": "2031-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-07-27",
      "last_synced_at": "2026-09-24T11:08:05.548Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07729332"
    },
    {
      "nct_id": "NCT03374956",
      "title": "Individualized Obesity Pharmacotherapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Phentermine-Topiramate",
          "type": "DRUG"
        },
        {
          "name": "Liraglutide",
          "type": "DRUG"
        },
        {
          "name": "Naltrexone/bupropion",
          "type": "DRUG"
        },
        {
          "name": "Phentermine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 193,
      "start_date": "2017-12-11",
      "completion_date": "2022-05-26",
      "has_results": true,
      "last_update_posted_date": "2023-07-18",
      "last_synced_at": "2026-09-24T11:08:05.548Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03374956"
    },
    {
      "nct_id": "NCT01719185",
      "title": "The Effect of Phentermine and B12 on Weight Loss Among Obese Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Obesity",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Phentermine and B12",
          "type": "DRUG"
        },
        {
          "name": "Phentermine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Dr. Michael Lang",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2012-09",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2015-08-13",
      "last_synced_at": "2026-09-24T11:08:05.548Z",
      "location_count": 1,
      "location_summary": "Greenville, North Carolina",
      "locations": [
        {
          "city": "Greenville",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01719185"
    }
  ]
}