{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Carotenoid&page=2",
    "query": {
      "condition": "Carotenoid",
      "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?condition=Carotenoid&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T15:10:04.759Z",
  "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": "NCT02550483",
      "title": "Novel Metabolites of Beta-Carotene and Lycopene",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Base diet + high beta-carotene tomato juice",
          "type": "OTHER"
        },
        {
          "name": "Base diet + high lycopene tomato juice",
          "type": "OTHER"
        },
        {
          "name": "Base diet + placebo beverage",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "USDA Beltsville Human Nutrition Research Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 36,
      "start_date": "2015-09",
      "completion_date": "2015-11",
      "has_results": false,
      "last_update_posted_date": "2018-04-26",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Beltsville, Maryland",
      "locations": [
        {
          "city": "Beltsville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02550483"
    },
    {
      "nct_id": "NCT01748916",
      "title": "Comparison of Carotenoid Bioavailability From Fresh Papaya, Tomato and Carrot",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Focus of Study: Carotenoid Absorption"
      ],
      "interventions": [
        {
          "name": "Papaya",
          "type": "OTHER"
        },
        {
          "name": "Carrot",
          "type": "OTHER"
        },
        {
          "name": "Tomato",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 16,
      "start_date": "2011-06",
      "completion_date": "2011-11",
      "has_results": true,
      "last_update_posted_date": "2025-10-20",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01748916"
    },
    {
      "nct_id": "NCT01403844",
      "title": "Carotenoid Response to the Intake of Vegetables and Fruits",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Resonance Raman Spectroscopy for Dietary Carotenoid Intake"
      ],
      "interventions": [
        {
          "name": "Carotenoid Depletion",
          "type": "OTHER"
        },
        {
          "name": "Carotenoid Repletion",
          "type": "OTHER"
        },
        {
          "name": "Natural Repletion",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "USDA Grand Forks Human Nutrition Research Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 29,
      "start_date": "2011-06",
      "completion_date": "2012-09",
      "has_results": false,
      "last_update_posted_date": "2020-05-20",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Grand Forks, North Dakota",
      "locations": [
        {
          "city": "Grand Forks",
          "state": "North Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01403844"
    },
    {
      "nct_id": "NCT06636396",
      "title": "Feasibility of Measuring Skin Carotenoid Level in an Asthma Clinic",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 29,
      "start_date": "2021-11-08",
      "completion_date": "2023-02-07",
      "has_results": false,
      "last_update_posted_date": "2024-10-10",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06636396"
    },
    {
      "nct_id": "NCT07727746",
      "title": "Fruit and Vegetable Study - Pilot",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fruit and Vegetable Consumption in Children",
        "Fruit and Vegetable Consumption",
        "Fruit and Vegetable Selection in the Lunchroom",
        "Caregiver Nutrition"
      ],
      "interventions": [
        {
          "name": "FFVP+",
          "type": "BEHAVIORAL"
        },
        {
          "name": "FFVP-only",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Arizona State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "7 Years to 65 Years"
      },
      "enrollment_count": 880,
      "start_date": "2026-07",
      "completion_date": "2027-07",
      "has_results": false,
      "last_update_posted_date": "2026-07-27",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07727746"
    },
    {
      "nct_id": "NCT05177679",
      "title": "Enhancing Children's Cognitive Function and Achievement Through Carotenoid Consumption",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cognitive Change",
        "Achievement",
        "Macular Pigmentation"
      ],
      "interventions": [
        {
          "name": "Active supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo control",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "10 Years",
        "sex": "ALL",
        "summary": "8 Years to 10 Years"
      },
      "enrollment_count": 113,
      "start_date": "2022-06-23",
      "completion_date": "2026-07-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-27",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05177679"
    },
    {
      "nct_id": "NCT01175577",
      "title": "Feeding the Rainbow to Investigate Endothelial Dysfunction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Dietary Modification",
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "Chlorophyll complex, Standard Process",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Betatene, sold as \"Full Spectrum Carotenoid Complex\"",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Small carotenoid-rich meals",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Bastyr 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": 60,
      "start_date": "2009-10",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2012-02-03",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 2,
      "location_summary": "Kenmore, Washington • Seattle, Washington",
      "locations": [
        {
          "city": "Kenmore",
          "state": "Washington"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01175577"
    },
    {
      "nct_id": "NCT00356252",
      "title": "Biological Functions of Carotenoids in Humans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Oxidative DNA Damage"
      ],
      "interventions": [
        {
          "name": "mixed carotenoids",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tufts University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 70 Years · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2002-04",
      "completion_date": "2003-12",
      "has_results": false,
      "last_update_posted_date": "2008-07-24",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00356252"
    },
    {
      "nct_id": "NCT04117022",
      "title": "Diabetic Retinopathy Functional Evaluation Study: Monitoring Carotenoid Vitamins Treatment Using ERG",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes",
        "Diabetic Retinopathy"
      ],
      "interventions": [
        {
          "name": "DVS supplementation",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "ZeaVision, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 45,
      "start_date": "2019-09-01",
      "completion_date": "2022-12-01",
      "has_results": false,
      "last_update_posted_date": "2021-04-23",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 2,
      "location_summary": "Pomona, California • Tahlequah, Oklahoma",
      "locations": [
        {
          "city": "Pomona",
          "state": "California"
        },
        {
          "city": "Tahlequah",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04117022"
    },
    {
      "nct_id": "NCT05869760",
      "title": "Baylor Infant and Toddler Biomarker of Nutrition Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Nutrition",
        "Healthy Diet"
      ],
      "interventions": [
        {
          "name": "Carotenoid Intake",
          "type": "OTHER"
        },
        {
          "name": "Serum carotenoid concentrations",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Months",
        "maximum_age": "24 Months",
        "sex": "ALL",
        "summary": "3 Months to 24 Months"
      },
      "enrollment_count": 208,
      "start_date": "2023-06-26",
      "completion_date": "2028-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-27",
      "last_synced_at": "2026-09-25T15:10:04.759Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05869760"
    }
  ]
}