{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Parkinson%27s+Disease&page=19&q=levodopa",
    "query": {
      "q": "levodopa",
      "condition": "Parkinson's Disease",
      "page": 19
    },
    "page_size": 10
  },
  "pagination": {
    "page": 19,
    "page_size": 10,
    "total_count": 256,
    "total_pages": 26,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Parkinson%27s+Disease&page=20&q=levodopa&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Parkinson%27s+Disease&page=18&q=levodopa&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-15T08:26:02.699Z",
  "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": "NCT06687837",
      "title": "Treating Parkinson's Disease Through Transplantation of Autologous Stem Cell-Derived Dopaminergic Neurons",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "autologous dopaminergic cell implantation",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Jeffrey S. Schweitzer, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "45 Years to 80 Years"
      },
      "enrollment_count": 8,
      "start_date": "2025-04-29",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-25",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06687837"
    },
    {
      "nct_id": "NCT04064294",
      "title": "Preventing Levodopa Induced Dyskinesia in Parkinson's Disease With HMG-CoA Reductase Inhibitors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parkinson Disease",
        "Dyskinesia, Drug-Induced"
      ],
      "interventions": [
        {
          "name": "Intravenous Infusion",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 93,
      "start_date": "2019-08-22",
      "completion_date": "2024-03-31",
      "has_results": true,
      "last_update_posted_date": "2025-04-11",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 3,
      "location_summary": "Portland, Oregon • Seattle, Washington",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04064294"
    },
    {
      "nct_id": "NCT00139880",
      "title": "A Single Center, Randomized, Double-blind, Crossover Pilot Trial Comparing the Onset of Action of Parcopa™ With Sinemet® in Subjects With Stable Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Parcopa",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "UCB Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": null,
      "start_date": "2005-06",
      "completion_date": "2005-08",
      "has_results": false,
      "last_update_posted_date": "2013-09-04",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00139880"
    },
    {
      "nct_id": "NCT01096186",
      "title": "An Open Label Extension Study of the Safety and Clinical Utility of IPX066 in Subjects With Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "IPX066 95 mg",
          "type": "DRUG"
        },
        {
          "name": "IPX066 145 mg",
          "type": "DRUG"
        },
        {
          "name": "IPX066 195 mg",
          "type": "DRUG"
        },
        {
          "name": "IPX066 245 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Impax Laboratories, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 617,
      "start_date": "2010-03",
      "completion_date": "2011-10",
      "has_results": true,
      "last_update_posted_date": "2019-11-08",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 36,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 30 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01096186"
    },
    {
      "nct_id": "NCT00357994",
      "title": "Study of Efficacy, Safety and Tolerability of Levodopa-Carbidopa Intestinal Gel in Levodopa-Responsive Parkinson's Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Advanced Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Levodopa carbidopa intestinal gel (LCIG)",
          "type": "DRUG"
        },
        {
          "name": "Placebo gel",
          "type": "DRUG"
        },
        {
          "name": "Levodopa carbidopa (LC) oral encapsulated immediate release (IR) tablets",
          "type": "DRUG"
        },
        {
          "name": "Placebo (PBO) oral capsules",
          "type": "DRUG"
        },
        {
          "name": "CADD-Legacy® 1400 ambulatory infusion pump",
          "type": "DEVICE"
        },
        {
          "name": "PEG tube",
          "type": "DEVICE"
        },
        {
          "name": "J-tube",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "AbbVie (prior sponsor, Abbott)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 36,
      "start_date": "2009-01",
      "completion_date": "2011-10",
      "has_results": true,
      "last_update_posted_date": "2015-01-16",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 8,
      "location_summary": "Los Angeles, California • Englewood, Colorado • Washington D.C., District of Columbia + 5 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Englewood",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00357994"
    },
    {
      "nct_id": "NCT05487300",
      "title": "Effect of Levodopa on Cardiovascular Autonomic Function in Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Parkinson Disease",
        "Orthostatic Hypotension"
      ],
      "interventions": [
        {
          "name": "Autonomic testing on and off levodopa",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 40,
      "start_date": "2022-05-11",
      "completion_date": "2023-05-01",
      "has_results": true,
      "last_update_posted_date": "2024-12-05",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05487300"
    },
    {
      "nct_id": "NCT00134966",
      "title": "A Study to Evaluate Fixed Dose Carbidopa/Levodopa/Entacapone Versus Immediate Release Carbidopa/Levodopa",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "capsules containing: carbidopa (25 mg), levodopa (100 mg), entacapone (200 mg)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis",
      "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": 493,
      "start_date": "2005-08",
      "completion_date": "2007-09",
      "has_results": false,
      "last_update_posted_date": "2017-05-17",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 17,
      "location_summary": "Phoenix, Arizona • La Jolla, California • Reseda, California + 13 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Reseda",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00134966"
    },
    {
      "nct_id": "NCT02242487",
      "title": "Twelve Month Safety and Efficacy Study of CVT-301 In Parkinson's Disease Patients With OFF Episodes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Idiopathic Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "CVT-301",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Acorda Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "86 Years",
        "sex": "ALL",
        "summary": "30 Years to 86 Years"
      },
      "enrollment_count": 325,
      "start_date": "2015-03",
      "completion_date": "2018-05",
      "has_results": true,
      "last_update_posted_date": "2019-08-14",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 55,
      "location_summary": "Scottsdale, Arizona • Fresno, California • Fullerton, California + 47 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02242487"
    },
    {
      "nct_id": "NCT04821830",
      "title": "Vigor and the LDR in Parkinson Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "carbidopa/levodopa, as prescribed by treating physician",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "45 Years to 90 Years"
      },
      "enrollment_count": 19,
      "start_date": "2020-02-12",
      "completion_date": "2024-04-25",
      "has_results": true,
      "last_update_posted_date": "2025-07-18",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04821830"
    },
    {
      "nct_id": "NCT01703598",
      "title": "Clinical Outcomes of Deep Brain Stimulator (DBS) Electrodes Placed Using Intraoperative Computed Tomography (CT) and Frameless Stereotaxis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Deep Brain Stimulation",
          "type": "DEVICE"
        },
        {
          "name": "DBS surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 69,
      "start_date": "2011-09",
      "completion_date": "2017-03",
      "has_results": true,
      "last_update_posted_date": "2019-08-13",
      "last_synced_at": "2026-10-15T08:26:02.699Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01703598"
    }
  ]
}