{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phentolamine&page=2",
    "query": {
      "intervention": "Phentolamine",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phentolamine&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T17:55:37.466Z",
  "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": "NCT04638660",
      "title": "Safety and Efficacy of Nyxol (0.75% Phentolamine Ophthalmic Solution) in Subjects With Dim Light Vision Disturbances",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Dim Light Vision Disturbances"
      ],
      "interventions": [
        {
          "name": "Phentolamine Ophthalmic Solution 0.75%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Ophthalmic Solution Vehicle (Placebo)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 144,
      "start_date": "2020-12-30",
      "completion_date": "2022-05-19",
      "has_results": true,
      "last_update_posted_date": "2025-10-14",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 17,
      "location_summary": "Newport Beach, California • Petaluma, California • Jacksonville, Florida + 12 more",
      "locations": [
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Petaluma",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Pittsburg",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04638660"
    },
    {
      "nct_id": "NCT04004507",
      "title": "Single Dose Study of Phentolamine Mesylate Eye Drops in Patients With Severe Night Vision Disturbances",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Decrease in Night Vision",
        "Disturbance; Vision, Loss"
      ],
      "interventions": [
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution 1%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 24,
      "start_date": "2007-08",
      "completion_date": "2008-02",
      "has_results": true,
      "last_update_posted_date": "2024-02-15",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 1,
      "location_summary": "Lynbrook, New York",
      "locations": [
        {
          "city": "Lynbrook",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04004507"
    },
    {
      "nct_id": "NCT00104104",
      "title": "A Multiple Myeloma Trial in Patients With Bone Metastases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "zoledronic acid",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 179,
      "start_date": "2004-10",
      "completion_date": "2007-10",
      "has_results": true,
      "last_update_posted_date": "2011-06-29",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 68,
      "location_summary": "Huntsville, Alabama • Glendale, Arizona • Tucson, Arizona + 61 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00104104"
    },
    {
      "nct_id": "NCT02966665",
      "title": ": Vascular Function in Health and Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease",
        "Pulmonary Artery Hypertension",
        "Heart Failure",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Maximum Exercise Tests",
          "type": "OTHER"
        },
        {
          "name": "BH4, L-NMMA, Vitamin C, Vitamin E, α-Lipoic Acid and L-Ascorbate",
          "type": "DRUG"
        },
        {
          "name": "BQ-123",
          "type": "DRUG"
        },
        {
          "name": "Fexofenadine, Ranitidine",
          "type": "DRUG"
        },
        {
          "name": "Angiotensin-II, Valsartan",
          "type": "OTHER"
        },
        {
          "name": "Acetylcholine, Sodium Nitroprusside, Angiotensin-II, Norepinephrine, Phentolamine",
          "type": "DRUG"
        },
        {
          "name": "BQ-123, MitoQ, BH4",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "D. Walter Wray",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 420,
      "start_date": "2008-09",
      "completion_date": "2030-08",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02966665"
    },
    {
      "nct_id": "NCT01474382",
      "title": "Study of OraVerse® for Safety and Efficacy in Pediatric Dental Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Dental Anesthesia",
        "Anesthesia, Local",
        "Anesthesia, Reversal"
      ],
      "interventions": [
        {
          "name": "OraVerse",
          "type": "DRUG"
        },
        {
          "name": "Sham injection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Novocol Pharmaceutical of Canada, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "5 Years",
        "sex": "ALL",
        "summary": "2 Years to 5 Years"
      },
      "enrollment_count": 150,
      "start_date": "2012-02",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2014-08-29",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 7,
      "location_summary": "San Francisco, California • Indianapolis, Indiana • Columbus, Ohio + 4 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01474382"
    },
    {
      "nct_id": "NCT04620213",
      "title": "Safety and Efficacy of Nyxol (0.75% Phentolamine Ophthalmic Solution) to Reverse Pharmacologically-Induced Mydriasis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Mydriasis",
        "Dilation"
      ],
      "interventions": [
        {
          "name": "Phentolamine Ophthalmic Solution 0.75%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Ophthalmic Solution Vehicle (Placebo)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 185,
      "start_date": "2020-11-18",
      "completion_date": "2021-03-15",
      "has_results": true,
      "last_update_posted_date": "2023-09-11",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 12,
      "location_summary": "Newport Beach, California • San Diego, California • Longwood, Florida + 9 more",
      "locations": [
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Longwood",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Roswell",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04620213"
    },
    {
      "nct_id": "NCT00716079",
      "title": "The Second Intensive Blood Pressure Reduction in Acute Cerebral Haemorrhage Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Intracerebral Hemorrhage",
        "Stroke",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Blood pressure management policies",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The George Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2839,
      "start_date": "2008-09",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2013-12-13",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00716079"
    },
    {
      "nct_id": "NCT04675151",
      "title": "Safety and Efficacy of Nyxol With Pilocarpine Eye Drops in Subjects With Presbyopia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Presbyopia"
      ],
      "interventions": [
        {
          "name": "Phentolamine Ophthalmic Solution 0.75%",
          "type": "DRUG"
        },
        {
          "name": "Pilocarpine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "40 Years to 64 Years"
      },
      "enrollment_count": 150,
      "start_date": "2021-02-15",
      "completion_date": "2021-06-30",
      "has_results": true,
      "last_update_posted_date": "2025-10-10",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 17,
      "location_summary": "Laguna Hills, California • Newport Beach, California • Crystal River, Florida + 14 more",
      "locations": [
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Crystal River",
          "state": "Florida"
        },
        {
          "city": "Longwood",
          "state": "Florida"
        },
        {
          "city": "Maitland",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04675151"
    },
    {
      "nct_id": "NCT04024891",
      "title": "Safety and Efficacy of Ophthalmic Phentolamine Mesylate to Reverse Pharmacologically Induced Mydriasis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Mydriasis",
        "Dilation"
      ],
      "interventions": [
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution 1%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 32,
      "start_date": "2019-08-13",
      "completion_date": "2019-09-17",
      "has_results": true,
      "last_update_posted_date": "2023-08-29",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 4,
      "location_summary": "Pittsburg, Kansas • Lexington, Kentucky • Athens, Ohio + 1 more",
      "locations": [
        {
          "city": "Pittsburg",
          "state": "Kansas"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Athens",
          "state": "Ohio"
        },
        {
          "city": "Warwick",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04024891"
    },
    {
      "nct_id": "NCT03079921",
      "title": "Adrenergic System in Islet Transplantation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Type1diabetes",
        "Hypoglycemia",
        "Hypoglycemia Unawareness",
        "Islet Cell Transplantation"
      ],
      "interventions": [
        {
          "name": "Phentolamine",
          "type": "DRUG"
        },
        {
          "name": "Propranolol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 9,
      "start_date": "2017-01-20",
      "completion_date": "2025-12-31",
      "has_results": true,
      "last_update_posted_date": "2026-04-27",
      "last_synced_at": "2026-09-29T17:55:37.466Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03079921"
    }
  ]
}