{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=L-dopa&page=4",
    "query": {
      "intervention": "L-dopa",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 83,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=L-dopa&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=L-dopa&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-17T09:11:34.481Z",
  "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": "NCT03581305",
      "title": "PET Imaging of the Dopaminergic and Serotonergic Systems in Treated HIV Positive Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Depression",
        "HIV Infections",
        "HIV-Associated Cognitive Motor Complex"
      ],
      "interventions": [
        {
          "name": "18F-FDOPA",
          "type": "DRUG"
        },
        {
          "name": "11C-DASB",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institutes of Health Clinical Center (CC)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 46,
      "start_date": "2018-11-20",
      "completion_date": "2022-04-06",
      "has_results": true,
      "last_update_posted_date": "2023-03-21",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03581305"
    },
    {
      "nct_id": "NCT00004847",
      "title": "Diagnosis of Pheochromocytoma",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pheochromocytoma",
        "Endocrine Disease",
        "Endocrine Diseases"
      ],
      "interventions": [
        {
          "name": "([18F]-DOPA)",
          "type": "DRUG"
        },
        {
          "name": "([18F]-6F-DA)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "3 Years to 120 Years"
      },
      "enrollment_count": 3000,
      "start_date": "2000-03-22",
      "completion_date": "2048-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-08",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004847"
    },
    {
      "nct_id": "NCT04469959",
      "title": "Dopaminergic Dysfunction in Late-Life Depression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Late Life Depression",
        "Cognitive Decline",
        "Depressive Disorder, Treatment-Resistant",
        "Levodopa",
        "Gait Impairment"
      ],
      "interventions": [
        {
          "name": "L-Dopa",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 79,
      "start_date": "2021-02-15",
      "completion_date": "2026-04-29",
      "has_results": false,
      "last_update_posted_date": "2026-08-06",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 2,
      "location_summary": "Pittsburgh, Pennsylvania • Nashville, Tennessee",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04469959"
    },
    {
      "nct_id": "NCT06075771",
      "title": "Dopaminergic Therapy for Anhedonia - 2",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anhedonia",
        "Depression"
      ],
      "interventions": [
        {
          "name": "Carbidopa Levodopa",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "25 Years to 55 Years"
      },
      "enrollment_count": 70,
      "start_date": "2023-11-21",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06075771"
    },
    {
      "nct_id": "NCT06954662",
      "title": "A Targeted Amino Acid Supplement for People With Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Parkinson Disease, Idiopathic"
      ],
      "interventions": [
        {
          "name": "Amino acid supplement",
          "type": "DRUG"
        },
        {
          "name": "Whey Protein Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Isonitrogenous Placebo Supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "UConn Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2025-05-22",
      "completion_date": "2025-07-17",
      "has_results": false,
      "last_update_posted_date": "2026-08-13",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 1,
      "location_summary": "Farmington, Connecticut",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06954662"
    },
    {
      "nct_id": "NCT02812147",
      "title": "Effect of L-Dihydoxyphenylserine on Locomotion, Postural Stability, and Fall Risk Reduction in Parkinson Disease",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "L-DOPS",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "St. Joseph's Hospital and Medical Center, Phoenix",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "83 Years",
        "sex": "ALL",
        "summary": "30 Years to 83 Years"
      },
      "enrollment_count": 20,
      "start_date": "2016-05",
      "completion_date": "2019-06",
      "has_results": false,
      "last_update_posted_date": "2019-02-15",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02812147"
    },
    {
      "nct_id": "NCT01281475",
      "title": "A Trial of Levodopa in Angelman Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Angelman Syndrome"
      ],
      "interventions": [
        {
          "name": "Levodopa",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wen-Hann Tan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "4 Years to 12 Years"
      },
      "enrollment_count": 67,
      "start_date": "2011-01",
      "completion_date": "2015-07",
      "has_results": true,
      "last_update_posted_date": "2020-07-15",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 7,
      "location_summary": "San Diego, California • San Francisco, California • Boston, Massachusetts + 4 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Greenwood",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01281475"
    },
    {
      "nct_id": "NCT00302146",
      "title": "Positron Emission Tomography (PET) Imaging in People With Gaucher Mutations",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson Disease",
        "Gaucher Disease"
      ],
      "interventions": [
        {
          "name": "15-0 H20",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Human Genome Research Institute (NHGRI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "110 Years",
        "sex": "ALL",
        "summary": "18 Years to 110 Years"
      },
      "enrollment_count": 64,
      "start_date": "2006-05-23",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00302146"
    },
    {
      "nct_id": "NCT02807675",
      "title": "A Study of the Safety and Tolerability of a Single Dose Administration of CVT-301 (Levodopa Inhalation Powder)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "CVT-301, LIP",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Acorda Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "30 Years to 85 Years"
      },
      "enrollment_count": 36,
      "start_date": "2016-06",
      "completion_date": "2016-11",
      "has_results": false,
      "last_update_posted_date": "2017-01-30",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 11,
      "location_summary": "Fountain Valley, California • Boca Raton, Florida • Hallandale, Florida + 8 more",
      "locations": [
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Boca Raton",
          "state": "Florida"
        },
        {
          "city": "Hallandale",
          "state": "Florida"
        },
        {
          "city": "St. Petersburg",
          "state": "Florida"
        },
        {
          "city": "Sunrise",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02807675"
    },
    {
      "nct_id": "NCT05560009",
      "title": "An Imaging Agent (Fluorodopa F 18) With Positron Emission Tomography/Magnetic Resonance Imaging for Assessing Treatment Response in Patients With High-Grade Soft Tissue Sarcomas",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Recurrent Soft Tissue Sarcoma",
        "Resectable Soft Tissue Sarcoma",
        "Soft Tissue Sarcoma"
      ],
      "interventions": [
        {
          "name": "Fluorodopa F 18",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Surgical Procedure",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2022-11-10",
      "completion_date": "2024-07-09",
      "has_results": false,
      "last_update_posted_date": "2025-07-10",
      "last_synced_at": "2026-10-17T09:11:34.481Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05560009"
    }
  ]
}