{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?page=3&q=levodopa",
    "query": {
      "q": "levodopa",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 343,
    "total_pages": 35,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?page=4&q=levodopa&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?page=2&q=levodopa&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T15:48:08.000Z",
  "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": "NCT03647137",
      "title": "Amyloidopathy, Cholinopathy, Dopamine Responsiveness and Freezing of Gait in PD",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Detailed motor testing, including FoG, in PD subjects",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 53,
      "start_date": "2016-06-07",
      "completion_date": "2021-05-26",
      "has_results": true,
      "last_update_posted_date": "2024-01-05",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03647137"
    },
    {
      "nct_id": "NCT02387281",
      "title": "Freezing of Gait: Clinical, Cognitive, and Imaging Features",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 60,
      "start_date": "2015-03",
      "completion_date": "2017-11-13",
      "has_results": false,
      "last_update_posted_date": "2018-04-06",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02387281"
    },
    {
      "nct_id": "NCT03000569",
      "title": "A Study to Evaluate SAGE-217 in Participants With Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "SAGE-217",
          "type": "DRUG"
        },
        {
          "name": "Levodopa",
          "type": "DRUG"
        },
        {
          "name": "Antiparkinsonian Agent(s)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "40 Years to 75 Years"
      },
      "enrollment_count": 29,
      "start_date": "2016-11-30",
      "completion_date": "2017-09-11",
      "has_results": true,
      "last_update_posted_date": "2023-11-29",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 11,
      "location_summary": "Panorama City, California • Jacksonville, Florida • Miami, Florida + 7 more",
      "locations": [
        {
          "city": "Panorama City",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03000569"
    },
    {
      "nct_id": "NCT02696512",
      "title": "A Study of IBRF Disorders of Consciousness Advanced Care/MultiModal Care Protocol in Severe Disorders of Consciousness",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Brain Injury"
      ],
      "interventions": [
        {
          "name": "Polypharmacy using FDA-approved products",
          "type": "DRUG"
        },
        {
          "name": "Median Nerve Stimulation (MNS)",
          "type": "DEVICE"
        },
        {
          "name": "Nutraceutical Supplementation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Standard of Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE",
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "International Brain Research Foundation",
      "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": 30,
      "start_date": "2016-03",
      "completion_date": "2017-04",
      "has_results": false,
      "last_update_posted_date": "2016-09-02",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 1,
      "location_summary": "Edison, New Jersey",
      "locations": [
        {
          "city": "Edison",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02696512"
    },
    {
      "nct_id": "NCT00004576",
      "title": "Study of LY300164 for the Treatment of Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dyskinesias",
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "LY300164",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Neurological Disorders and Stroke (NINDS)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20,
      "start_date": "2000-02",
      "completion_date": "2000-08",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004576"
    },
    {
      "nct_id": "NCT03944785",
      "title": "Clinical Outcome Assessment of Parkinson's Disease Patients Treated With XADAGO (Safinamide)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Idiopathic Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "XADAGO (safinamide)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Supernus Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "30 Years to 80 Years"
      },
      "enrollment_count": 164,
      "start_date": "2017-11-30",
      "completion_date": "2020-01-10",
      "has_results": true,
      "last_update_posted_date": "2023-06-07",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 30,
      "location_summary": "Homewood, Alabama • Bakersfield, California • Laguna Hills, California + 27 more",
      "locations": [
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Los Gatos",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03944785"
    },
    {
      "nct_id": "NCT00713583",
      "title": "Carbidopa/Levodopa Combined With Behavioral Therapy for the Treatment of Cocaine Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cocaine Dependence"
      ],
      "interventions": [
        {
          "name": "levodopa",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Cognitive Behavioral Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Contingency Management",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "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": 85,
      "start_date": "2008-01",
      "completion_date": "2011-12",
      "has_results": true,
      "last_update_posted_date": "2018-04-23",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00713583"
    },
    {
      "nct_id": "NCT01397422",
      "title": "Extended Release Amantadine Safety and Efficacy Study in Levodopa-Induced Dyskinesia (EASED Study)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Dyskinesia",
        "Levodopa Induced Dyskinesia",
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "ADS-5102 (extended release amantadine HCl)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Adamas Pharmaceuticals, Inc.",
      "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": 83,
      "start_date": "2011-07",
      "completion_date": "2013-10",
      "has_results": true,
      "last_update_posted_date": "2017-12-13",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 33,
      "location_summary": "Sun City, Arizona • Fountain Valley, California • Long Beach, California + 30 more",
      "locations": [
        {
          "city": "Sun City",
          "state": "Arizona"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01397422"
    },
    {
      "nct_id": "NCT02812394",
      "title": "A Study to Compare Two Dose Strengths of CVT-301 (Levodopa Inhalation Powder) With an Oral Dose of Sinemet® (Carbidopa-levodopa) Tablets",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "CVT-301 (Dose Level 1)",
          "type": "DRUG"
        },
        {
          "name": "CVT-301 (Dose Level 2)",
          "type": "DRUG"
        },
        {
          "name": "Sinemet®",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Acorda Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "25 Years to 65 Years"
      },
      "enrollment_count": 24,
      "start_date": "2016-06",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-10-26",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02812394"
    },
    {
      "nct_id": "NCT03922711",
      "title": "A Study to Assess the Safety and Effectiveness of Pridopidine Compared to Placebo in the Treatment of Levodopa-Induced Dyskinesia in Patients With Parkinson's Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "Pridopidine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Prilenia",
      "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": 23,
      "start_date": "2019-05-22",
      "completion_date": "2020-07-22",
      "has_results": true,
      "last_update_posted_date": "2022-07-01",
      "last_synced_at": "2026-10-09T15:48:08.000Z",
      "location_count": 33,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 27 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03922711"
    }
  ]
}