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vitamin A isotope

Showing 1 - 25 of 4,381
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Vitamin A Trial in Dakar (Intervention)

Not yet recruiting
  • Vitamin A
  • Intervention
  • Dakar, Senegal
    Universite Cheikh Anta Diop
Nov 8, 2022

Chronic Kidney Disease Trial in Seattle (D6-25-hydroxyvitamin D3)

Completed
Has Results
  • Chronic Kidney Disease
  • D6-25-hydroxyvitamin D3
  • Seattle, Washington
    University of Washington
May 14, 2022

Vitamin A Deficiency Trial in Madison, Bogor (Vitamin A supplement, Placebo)

Completed
  • Vitamin A Deficiency
  • Vitamin A supplement
  • Placebo
  • Madison, Wisconsin
  • +1 more
Oct 29, 2019

Diabetes, Fatty Liver, Obesity Trial run by the NIDDK (Alpha tocopherol, Vitamin E, Vitamin C)

Completed
  • Diabetes
  • +3 more
  • Alpha tocopherol
  • +2 more
  • Bethesda, Maryland
    National Institutes of Health Clinical Center
Jan 25, 2023

Healthy Infants, Infants With an Inflammatory Condition Trial in Dhaka (Vaccine)

Completed
  • Healthy Infants
  • Infants With an Inflammatory Condition
  • Vaccine
  • Dhaka, Bangladesh
  • +1 more
Aug 19, 2019

Resistance Exercise Trial in Potchefstroom (Galactooligosaccharides (GOS))

Not yet recruiting
  • Resistance Exercise
  • Galactooligosaccharides (GOS)
  • Potchefstroom, North West, South Africa
    Este Vorster Research Facility
Sep 17, 2023

Vitamin A Status in Patients With Vocal Fold Leukoplakia

Enrolling by invitation
  • Vitamin A
  • +3 more
    • Madison, Wisconsin
      University of Wisconsin Hospitals and Clinics
    Jul 18, 2022

    Chronic Kidney Diseases Trial in London (calcium carbonate, sevelamer carbonate)

    Active, not recruiting
    • Chronic Kidney Diseases
    • calcium carbonate
    • sevelamer carbonate
    • London, United Kingdom
      Great Ormond Street Hospital for Children
    Aug 11, 2021

    Weight Loss, Vitamin D or Placebo Trial in New Brunswick (Weight Loss, Vitamin D 2500 IU, Weight Maintenance)

    Completed
    • Weight Loss
    • Vitamin D or Placebo
    • Weight Loss
    • +2 more
    • New Brunswick, New Jersey
      Rutgers University
    Jan 28, 2022

    Healthy, Kidney Stone, Obesity Trial in Birmingham (Low-oxalate controlled diet, Primed, continuous intravenous infusion of

    Recruiting
    • Healthy
    • +2 more
    • Low-oxalate controlled diet
    • Primed, continuous intravenous infusion of 13C2-oxalate
    • Birmingham, Alabama
      University of Alabama at Birmingham
    Feb 21, 2022

    Nutrition Status Trial in Siaya (dietary supplement, behavioral, combination product)

    Recruiting
    • Nutrition Status
    • CSB+
    • +3 more
    • Siaya, Western, Kenya
      Rwambwa Sub County Hospital
    Aug 15, 2023

    Healthy Trial in Kannapolis (25% Cho diet, 50% Cho diet, 100% Cho diet)

    Completed
    • Healthy
    • 25% Cho diet
    • +2 more
    • Kannapolis, North Carolina
      UNC Chapel Hill Nutrition Research Institute
    Nov 2, 2021

    EED on Zn Absorption and Retention in Children FromStandard Dose

    Completed
    • Environmental Enteric Dysfunction
    • +2 more
    • 3 mg zinc sulfate supplement
    • 0.5 mg of 13C10-retinyl-acetate
    • Aurora, Colorado
    • +1 more
    Jun 27, 2019

    Nutritional Status and Bouillon Use in Northern Ghana

    Completed
    • Iron Deficiency
    • +6 more
    • N/A (observational study)
    • Accra, Ghana
      University of Ghana
    Apr 15, 2022

    Healthy Trial in Birmingham (Low oxalate controlled Diet, Primed, continuous intravenous infusion of 13C2-Glycolate, Bolus

    Recruiting
    • Healthy
    • Low oxalate controlled Diet
    • +3 more
    • Birmingham, Alabama
      University of Alabama at Birmingham
    Aug 5, 2021

    Infection, Vitamin A Overdose Trial in Dakar (Vitamin A supplementation)

    Completed
    • Infection
    • Vitamin A Overdose
    • Vitamin A supplementation
    • Dakar, Senegal
      Universite Cheikh Anta Diop
    Feb 22, 2019

    Natural Calcium Isotope Ratio in Urine and Serum for Diagnosis

    Completed
    • Osteoporosis
      • Kiel, Schleswig-Holstein, Germany
        Clinical Research Center Kiel GmbH
      Feb 5, 2021

      Cystic Fibrosis Trial in Seattle (d6-25-hydroxyvitamin D3)

      Active, not recruiting
      • Cystic Fibrosis
      • d6-25-hydroxyvitamin D3
      • Seattle, Washington
        University of Washington
      Sep 27, 2021

      VUR - Vesicoureteric Reflux Trial in Turku (Contrast-enhanced voiding ultrasonography (CEVUS), Direct isotope cystography)

      Recruiting
      • VUR - Vesicoureteric Reflux
      • Contrast-enhanced voiding ultrasonography (CEVUS), Direct isotope cystography
      • Turku, Finland
        Turku University hospital
      Nov 13, 2023

      Chronic Kidney Disease Trial in Seattle (D6-25-hydroxyvitamin D3)

      Completed
      Has Results
      • Chronic Kidney Disease
      • D6-25-hydroxyvitamin D3
      • Seattle, Washington
        University of Washington
      Aug 31, 2021

      Biofortification, Potato Trial in Lima (Iron biofortified potato, Zinc biofortified potato)

      Recruiting
      • Biofortification
      • Potato
      • Iron biofortified potato
      • Zinc biofortified potato
      • Lima, Peru
      • +1 more
      Mar 29, 2022

      Parathyroid Adenoma Trial (18Fluorocholine)

      Not yet recruiting
      • Parathyroid Adenoma
      • (no location specified)
      May 26, 2023

      Determinants of Neonatal Anemia in Women Carrying Multiples

      Active, not recruiting
      • Anemia
        • Rochester, New York
          Strong Memorial Hospital
        Mar 10, 2022

        Iron Absorption and Requirements in Pregnancy and Lactation

        Recruiting
        • Iron Requirements
        • +4 more
        • CO-rebreathing
        • +2 more
        • Msambweni, Kenya
          Msambweni Referral Hospital
        Jul 31, 2023

        Vitamin D Supplementation Trial in London (Vitamin D phosphate, Placebo transdermal patch)

        Recruiting
        • Vitamin D Supplementation
        • Vitamin D phosphate
        • Placebo transdermal patch
        • London, United Kingdom
          Institute of Pharmaceutical Science, King's College London
        Oct 31, 2023