{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Trimethaphan",
    "query": {
      "intervention": "Trimethaphan"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T11:00:11.217Z",
  "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": "NCT00179023",
      "title": "The Autonomic Nervous System and Obesity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "OBESITY",
        "HYPERTENSION",
        "PURE AUTONOMIC FAILURE",
        "SHY-DRAGER SYNDROME"
      ],
      "interventions": [
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        },
        {
          "name": "Pseudoephedrine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 128,
      "start_date": "2003-04",
      "completion_date": "2017-01",
      "has_results": false,
      "last_update_posted_date": "2018-03-01",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00179023"
    },
    {
      "nct_id": "NCT01122407",
      "title": "Pathophysiology of Cardiometabolic Risk Factors in African Americans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Obesity",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "L-NMMA",
          "type": "DRUG"
        },
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 50 Years · Female only"
      },
      "enrollment_count": 34,
      "start_date": "2010-01",
      "completion_date": "2016-11",
      "has_results": false,
      "last_update_posted_date": "2017-01-18",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01122407"
    },
    {
      "nct_id": "NCT01137253",
      "title": "Autonomic Nervous System and Nitric Oxide Interactions",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Endothelial Dysfunction"
      ],
      "interventions": [
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 21,
      "start_date": "2010-06",
      "completion_date": "2017-01",
      "has_results": false,
      "last_update_posted_date": "2018-02-28",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01137253"
    },
    {
      "nct_id": "NCT02245230",
      "title": "Cardiovascular Effects of Angiotensin (1-7) in Essential Hypertension",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypertension",
        "Hypertension, Essential"
      ],
      "interventions": [
        {
          "name": "Angiotensin (1-7)",
          "type": "DRUG"
        },
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        },
        {
          "name": "Phenylephrine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt 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": 24,
      "start_date": "2015-01",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2024-01-09",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02245230"
    },
    {
      "nct_id": "NCT03028571",
      "title": "Autonomic Blockade and Endogenous Glucose Production",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        },
        {
          "name": "Saline",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "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": 0,
      "start_date": "2017-04-17",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2021-06-08",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03028571"
    },
    {
      "nct_id": "NCT02425566",
      "title": "Role of Sympathetic Activity and Splanchnic Capacitance in Hypertension",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        },
        {
          "name": "Nitroglycerin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 12,
      "start_date": "2015-04",
      "completion_date": "2028-08",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02425566"
    },
    {
      "nct_id": "NCT00178919",
      "title": "Nitric Oxide and the Autonomic Nervous System",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension",
        "Pure Autonomic Failure"
      ],
      "interventions": [
        {
          "name": "L-NMMA",
          "type": "DRUG"
        },
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 112,
      "start_date": "2002-08",
      "completion_date": "2008-08",
      "has_results": true,
      "last_update_posted_date": "2013-06-04",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00178919"
    },
    {
      "nct_id": "NCT02726711",
      "title": "Reduction in Splanchnic Capacitance Contributes to Sympathetically Dependent Hypertension in Autonomic",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Multiple System Atrophy",
        "Orthostatic Hypotension",
        "Supine Hypertension"
      ],
      "interventions": [
        {
          "name": "Trimethaphan",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 2,
      "start_date": "2016-04",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-13",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02726711"
    },
    {
      "nct_id": "NCT00580957",
      "title": "The Autonomic Nervous System and the Metabolic Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Blocked",
          "type": "DRUG"
        },
        {
          "name": "Intact",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 56,
      "start_date": "2008-08",
      "completion_date": "2015-05",
      "has_results": true,
      "last_update_posted_date": "2016-08-05",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00580957"
    },
    {
      "nct_id": "NCT00580619",
      "title": "Autonomic Nervous System and Chronic Fatigue Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Fatigue Syndrome",
        "Orthostatic Intolerance",
        "Postural Tachycardia Syndrome"
      ],
      "interventions": [
        {
          "name": "Autonomic Function Testing",
          "type": "OTHER"
        },
        {
          "name": "Saline infusions",
          "type": "OTHER"
        },
        {
          "name": "L-NMMA trimethaphan",
          "type": "DRUG"
        },
        {
          "name": "methyldopa",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 170,
      "start_date": "2007-04",
      "completion_date": "2017-01",
      "has_results": false,
      "last_update_posted_date": "2017-01-18",
      "last_synced_at": "2026-09-03T11:00:11.217Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00580619"
    }
  ]
}