{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+for+Phentermine",
    "query": {
      "intervention": "Placebo for Phentermine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 24,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+for+Phentermine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T15:21:40.030Z",
  "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": "NCT02553824",
      "title": "FDA Approved Medication to Reduce Binge Eating and/or Purging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Binge Eating Disorder",
        "Bulimia Nervosa"
      ],
      "interventions": [
        {
          "name": "Phentermine/Topiramate-First",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stanford University",
      "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": 22,
      "start_date": "2015-10-30",
      "completion_date": "2017-04-15",
      "has_results": false,
      "last_update_posted_date": "2018-05-14",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02553824"
    },
    {
      "nct_id": "NCT05834062",
      "title": "Phentermine/Topiramate as Preventive Pharmacotherapy for Obesity",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Obesity, Adolescent"
      ],
      "interventions": [
        {
          "name": "Qsymia and lifestyle management therapy",
          "type": "DRUG"
        },
        {
          "name": "Placebo and lifestyle management therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "22 Years",
        "sex": "ALL",
        "summary": "16 Years to 22 Years"
      },
      "enrollment_count": 0,
      "start_date": "2023-10-17",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2023-10-26",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05834062"
    },
    {
      "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": "2026-09-29T15:21:40.030Z",
      "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": "NCT04881799",
      "title": "Phentermine/Topiramate in Adolescents With Type 2 Diabetes and Obesity",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Pediatric Obesity"
      ],
      "interventions": [
        {
          "name": "Phentermine/Topiramate (Qsymia)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "12 Years to 20 Years"
      },
      "enrollment_count": 13,
      "start_date": "2022-07-07",
      "completion_date": "2026-10-27",
      "has_results": true,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04881799"
    },
    {
      "nct_id": "NCT05975580",
      "title": "Pharmacotherapy in Conjunction With Lifestyle Counseling for Management of Weight Regain After Bariatric Surgery",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Topiramate",
          "type": "DRUG"
        },
        {
          "name": "Phentermine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Irvine",
      "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": 120,
      "start_date": "2023-08-29",
      "completion_date": "2028-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-09",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05975580"
    },
    {
      "nct_id": "NCT00563368",
      "title": "A Study Comparing Multiple Doses of VI-0521 With Placebo and Their Single-agent Constituents for Treatment of Obesity in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "VI-0521",
          "type": "DRUG"
        },
        {
          "name": "topiramate",
          "type": "DRUG"
        },
        {
          "name": "phentermine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VIVUS 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": 756,
      "start_date": "2007-12",
      "completion_date": "2008-09",
      "has_results": true,
      "last_update_posted_date": "2015-03-30",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00563368"
    },
    {
      "nct_id": "NCT00806260",
      "title": "A Study to Evaluate How VI-0521 Affect Psychomotor Performance in Healthy Overweight and Obese Subjects.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Overweight",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "VI-0521",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Alcohol",
          "type": "OTHER"
        },
        {
          "name": "alcohol placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "VIVUS LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "21 Years to 45 Years"
      },
      "enrollment_count": 80,
      "start_date": "2008-12",
      "completion_date": "2009-05",
      "has_results": true,
      "last_update_posted_date": "2013-09-13",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 1,
      "location_summary": "Lincoln, Nebraska",
      "locations": [
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00806260"
    },
    {
      "nct_id": "NCT04721873",
      "title": "Pharmacologic Weight Loss as Adjunct Therapy for Ulcerative Colitis in Obese Patients",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Colitis, Ulcerative",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Phentermine-Topiramate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Diego",
      "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": 40,
      "start_date": "2020-12-18",
      "completion_date": "2024-06-30",
      "has_results": false,
      "last_update_posted_date": "2023-05-16",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04721873"
    },
    {
      "nct_id": "NCT02239913",
      "title": "Topiramate-Phentermine Combinations for Cocaine Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cocaine Use Disorder"
      ],
      "interventions": [
        {
          "name": "Cocaine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Phentermine",
          "type": "DRUG"
        },
        {
          "name": "Topiramate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Kentucky",
      "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": 38,
      "start_date": "2014-09",
      "completion_date": "2019-09",
      "has_results": false,
      "last_update_posted_date": "2019-11-27",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02239913"
    },
    {
      "nct_id": "NCT07282340",
      "title": "Phentermine's Impact on Treatment in Teens",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Childhood Obesity"
      ],
      "interventions": [
        {
          "name": "Phentermine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Russell McCulloh, MD",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "12 Years to 17 Years"
      },
      "enrollment_count": 240,
      "start_date": "2026-06-03",
      "completion_date": "2028-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-10",
      "last_synced_at": "2026-09-29T15:21:40.030Z",
      "location_count": 6,
      "location_summary": "Baton Rouge, Louisiana • Kansas City, Missouri • Lebanon, New Hampshire + 3 more",
      "locations": [
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07282340"
    }
  ]
}