{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=levodopa&page=8",
    "query": {
      "intervention": "levodopa",
      "page": 8
    },
    "page_size": 10
  },
  "pagination": {
    "page": 8,
    "page_size": 10,
    "total_count": 253,
    "total_pages": 26,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=levodopa&page=9&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=levodopa&page=7&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-26T22:40:29.748Z",
  "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": "NCT00804479",
      "title": "The Long Term Impact of Initiating Pramipexole Versus Levodopa in Early Parkinson's Disease (CALM-PD Cohort Study)",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "No intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 222,
      "start_date": "2002-01",
      "completion_date": "2004-03",
      "has_results": false,
      "last_update_posted_date": "2016-01-21",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00804479"
    },
    {
      "nct_id": "NCT03648905",
      "title": "Clinical Laboratory Evaluation of Chronic Autonomic Failure",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson's Disease",
        "Multiple System Atrophy",
        "Autonomic Failure"
      ],
      "interventions": [
        {
          "name": "13N-Ammonia",
          "type": "DRUG"
        },
        {
          "name": "18F-DOPA",
          "type": "DRUG"
        },
        {
          "name": "11C-Methylreboxetine (11C-MRB)",
          "type": "DRUG"
        },
        {
          "name": "18F-Dopamine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Neurological Disorders and Stroke (NINDS)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 89,
      "start_date": "2018-09-06",
      "completion_date": "2026-07-15",
      "has_results": false,
      "last_update_posted_date": "2026-10-26",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03648905"
    },
    {
      "nct_id": "NCT00368108",
      "title": "Efficacy, Safety, and Tolerability of E2007 in Levodopa Treated Parkinson's Disease Patients With Motor Fluctuations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "2 mg perampanel",
          "type": "DRUG"
        },
        {
          "name": "4 mg perampanel",
          "type": "DRUG"
        },
        {
          "name": "placebo comparator",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eisai Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 752,
      "start_date": "2006-08",
      "completion_date": "2008-01",
      "has_results": true,
      "last_update_posted_date": "2013-05-20",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 99,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Peoria, Arizona + 82 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00368108"
    },
    {
      "nct_id": "NCT01528592",
      "title": "PharmacoMRI of Parkinson Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Carbidopa-Levodopa",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2011-06",
      "completion_date": "2012-07",
      "has_results": true,
      "last_update_posted_date": "2018-05-03",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01528592"
    },
    {
      "nct_id": "NCT02633007",
      "title": "A Study of the Safety and Pharmacokinetics of Levodopa Following Administration of CVT 301 (Levodopa Inhalation Powder) in Adults With Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "CVT-301 (levodopa inhalation powder)",
          "type": "DRUG"
        },
        {
          "name": "Carbidopa",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Acorda Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "25 Years to 65 Years"
      },
      "enrollment_count": 25,
      "start_date": "2015-12",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2016-06-13",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 3,
      "location_summary": "Daytona Beach, Florida • North Dartmouth, Massachusetts • Dallas, Texas",
      "locations": [
        {
          "city": "Daytona Beach",
          "state": "Florida"
        },
        {
          "city": "North Dartmouth",
          "state": "Massachusetts"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02633007"
    },
    {
      "nct_id": "NCT05094050",
      "title": "Study to Assess How ABBV-951 is Absorbed When Administered at Different Subcutaneous Sites of Adult Participants With Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "ABBV-951",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AbbVie",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2022-01-18",
      "completion_date": "2023-03-17",
      "has_results": false,
      "last_update_posted_date": "2023-03-24",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 10,
      "location_summary": "Aurora, Colorado • Washington D.C., District of Columbia • Chicago, Illinois + 7 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Raleigh",
          "state": "North Carolina"
        },
        {
          "city": "Tulsa",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05094050"
    },
    {
      "nct_id": "NCT01920425",
      "title": "Kinesia HomeView - Home Diary Comparison",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Kinesia HomeView",
          "type": "DEVICE"
        },
        {
          "name": "Hand-written diary",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Great Lakes NeuroTechnologies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2013-07",
      "completion_date": "2015-09",
      "has_results": false,
      "last_update_posted_date": "2016-01-12",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 1,
      "location_summary": "Valley View, Ohio",
      "locations": [
        {
          "city": "Valley View",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01920425"
    },
    {
      "nct_id": "NCT01536015",
      "title": "Effect of Rotigotine on Motor Symptoms in Patients With Advanced Parkinson's Disease (PD) With Motor Fluctuations and Symptoms of Gastrointestinal Dysfunction",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Advanced Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Rotigotine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "UCB Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2012-01",
      "completion_date": "2013-10",
      "has_results": true,
      "last_update_posted_date": "2014-08-01",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 26,
      "location_summary": "Birmingham, Alabama • Gilbert, Arizona • Fountain Valley, California + 23 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01536015"
    },
    {
      "nct_id": "NCT00218023",
      "title": "Medications for Stopping Cocaine Dependence and Preventing Relapse",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cocaine Abuse",
        "Cocaine-Related Disorders"
      ],
      "interventions": [
        {
          "name": "Modafinil",
          "type": "DRUG"
        },
        {
          "name": "Levodopa/Carbidopa",
          "type": "DRUG"
        },
        {
          "name": "Naltrexone HCl",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Motivational Interviewing (MI)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Contingency management (CM)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive-Behavioral Therapy (CBT)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "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": 101,
      "start_date": "2006-03",
      "completion_date": "2012-04",
      "has_results": true,
      "last_update_posted_date": "2017-06-09",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00218023"
    },
    {
      "nct_id": "NCT00099268",
      "title": "Efficacy and Safety of Carbidopa/Levodopa/Entacapone in Patients With Parkinson's Disease Requiring Initiation of Levodopa Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Carbidopa/levodopa/entacapone",
          "type": "DRUG"
        },
        {
          "name": "Immediate release carbidopa/levodopa",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "30 Years to 70 Years"
      },
      "enrollment_count": 747,
      "start_date": "2004-09",
      "completion_date": "2008-11",
      "has_results": true,
      "last_update_posted_date": "2012-04-23",
      "last_synced_at": "2026-10-26T22:40:29.748Z",
      "location_count": 31,
      "location_summary": "Birmingham, Alabama • Scottsdale, Arizona • La Jolla, California + 25 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00099268"
    }
  ]
}