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ClinicalTrials.gov public records Last synced Nov 6, 2026, 4:13 PM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–22 of 22 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: Vitamin D Powder Clear all

Conditions: Cystic Fibrosis
Interventions: Vitamin D Powder, Vitamin D Oil; Dietary Supplement
Lead sponsor: Emory University; Other
Eligibility: 18 Years to 59 Years
Enrollment: 17 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2015
U.S. locations: 1
States / cities: Atlanta, Georgia

Conditions: Diabetes Mellitus, Type 2
Interventions: pioglitazone, rosiglitazone, placebo, Vitamin D, Placebo; Drug · Dietary Supplement
Lead sponsor: GlaxoSmithKline; Industry
Eligibility: 50 Years and older
Enrollment: 1,332 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2010
U.S. locations: 23
States / cities: Long Beach, California • Los Angeles, California • Northridge, California + 19 more

Conditions: Dietary Supplement
Interventions: Dietary Supplement: Sprinkled Format REDUCOSE., Reference control, Active comparator; Dietary Supplement · Other
Lead sponsor: Société des Produits Nestlé (SPN); Industry
Eligibility: 19 Years and older
Enrollment: 30 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2021
U.S. locations: 1
States / cities: Tustin, California

Conditions: Systemic Lupus Erythematosus, SLE, Lupus
Interventions: Vitamin D3, Vitamin D3 placebo; Drug
Lead sponsor: National Institute of Allergy and Infectious Diseases (NIAID); NIH
Eligibility: 18 Years and older
Enrollment: 57 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2011
U.S. locations: 8
States / cities: Birmingham, Alabama • San Francisco, California • Boston, Massachusetts + 5 more

Conditions: Urinary Tract
Interventions: Flush Advanced+ Dietary Drink Mix, Placebo Dietary Drink Mix; Dietary Supplement
Lead sponsor: Bonafide Health; Industry
Eligibility: 18 Years to 75 Years · Female only
Enrollment: 180 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2027
U.S. locations: 1
States / cities: Harrison, New York

Conditions: Muscle Function, Muscle Soreness, Vitamin D Status
Interventions: Vitamin D2 mushroom powder, Placebo; Dietary Supplement · Other
Lead sponsor: Appalachian State University; Other
Eligibility: 20 Years to 40 Years · Male only
Enrollment: 33 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2012 – 2013
U.S. locations: 3
States / cities: Kannapolis, North Carolina

Conditions: Polycystic Ovary Syndrome, Premenstrual Syndrome
Interventions: Female Hormone Balance Supplement; Dietary Supplement
Lead sponsor: Rael; Industry
Eligibility: 18 Years to 55 Years · Female only
Enrollment: 40 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2024
U.S. locations: 1
States / cities: Santa Monica, California

Conditions: Cancer of Pancreas
Interventions: Nutrawell Powder, Diet Only, OmegaRich fish oil supplement; Dietary Supplement · Other
Lead sponsor: Jonsson Comprehensive Cancer Center; Other
Eligibility: 18 Years to 75 Years · Male only
Enrollment: 2 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2021
U.S. locations: 1
States / cities: Los Angeles, California

Conditions: Food Allergy
Interventions: Food Supplement; Dietary Supplement
Lead sponsor: Northwestern University; Other
Eligibility: 5 Months to 11 Months
Enrollment: 705 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2017
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Hip Fracture
Interventions: PUSH, Protein, Nutrition; Behavioral · Dietary Supplement
Lead sponsor: University of Maryland, Baltimore; Other
Eligibility: 60 Years and older
Enrollment: 20 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2020
U.S. locations: 2
States / cities: Baltimore, Maryland • Towson, Maryland

Conditions: X-Linked Hypophosphatemia
Interventions: burosumab, Oral Phosphate Supplement, active vitamin D; Biological · Drug
Lead sponsor: Kyowa Kirin, Inc.; Industry
Eligibility: 1 Year to 12 Years
Enrollment: 61 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2019
U.S. locations: 5
States / cities: Los Angeles, California • San Francisco, California • Indianapolis, Indiana + 2 more

Conditions: Hypovitaminosis D, Insulin Resistance, Diabetes
Interventions: Vitamin D3; Dietary Supplement
Lead sponsor: Bastyr University; Other
Eligibility: 18 Years to 65 Years
Enrollment: 66 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2011
U.S. locations: 2
States / cities: Kailua-Kona, Hawaii • Kenmore, Washington

Conditions: Damage Muscle, Body Weight Changes, Performance Enhancing Product Use
Interventions: Pre-workout plus and Protein recovery plus, Placebo, 6-week resistance training program; Dietary Supplement · Other
Lead sponsor: Pharmanex; Industry
Eligibility: 25 Years to 50 Years
Enrollment: 69 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2021 – 2022
U.S. locations: 1
States / cities: Chapel Hill, North Carolina

Conditions: Adult Stem Cell Proliferation
Interventions: NutraStem, Placebo; Drug
Lead sponsor: University of North Texas Health Science Center; Other
Eligibility: 50 Years to 70 Years
Enrollment: 23 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2013 – 2017
U.S. locations: 1
States / cities: Fort Worth, Texas

Conditions: Burn Injury, Chronic Pain
Interventions: Ergocalciferol, Placebo; Drug
Lead sponsor: University of North Carolina, Chapel Hill; Other
Eligibility: 18 Years to 70 Years
Enrollment: 40 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2026
U.S. locations: 1
States / cities: Chapel Hill, North Carolina

Conditions: PTSD - Post Traumatic Stress Disorder, Cognitive Dysfunction, Brain Injury, Depression - Major Depressive Disorder, Suicidal Ideation
Interventions: Magnetic e-Resonance Therapy (MeRT), Ibogaine Hydrochloride with Magnesium Sulfate, 5-methoxy-N,N-dimethyltryptamine, Physiological Supplementation; Device · Drug
Lead sponsor: Axial Therapeutic Research; Industry
Eligibility: 18 Years and older
Enrollment: 52 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2022 – 2026
U.S. locations: 1
States / cities: Northridge, California

Conditions: Vitamin D Deficiency
Interventions: Vitamin D-enriched mushrooms, Study Powder; Other
Lead sponsor: Purdue University; Other
Eligibility: 30 Years to 69 Years
Enrollment: 36 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2022 – 2024
U.S. locations: 1
States / cities: West Lafayette, Indiana

Conditions: Vitamin d Deficiency
Interventions: Vitamin D; Dietary Supplement
Lead sponsor: University of Delaware; Other
Eligibility: 18 Years to 30 Years · Female only
Enrollment: 22 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2025
U.S. locations: 1
States / cities: Newark, Delaware

Conditions: Soreness, Muscle, Performance Enhancing Product Use, Damage Muscle
Interventions: Pre-workout plus and protein recovery plus, Placebo; Dietary Supplement · Other
Lead sponsor: Pharmanex; Industry
Eligibility: 25 Years to 50 Years
Enrollment: 32 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2020
U.S. locations: 1
States / cities: Chapel Hill, North Carolina

Conditions: Anxiety Disorders and Symptoms, Fibromyalgia, Arthritis, Chronic Pain, Hypertension,Essential
Interventions: IV Vitamin Infused Therapy Treatment, Herbal medicine; Dietary Supplement · Drug
Lead sponsor: Faith A. Richardson; Other
Eligibility: 21 Years to 80 Years
Enrollment: 25 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2025 – 2026
U.S. locations: 1
States / cities: Dover, Delaware

Conditions: Perianal Dermatitis, Diaper Dermatitis, Postoperative Complications, Colostomy Site, Ileostomy - Stoma
Interventions: Stool application, Standard of care skincare; Other
Lead sponsor: University of Pittsburgh; Other
Eligibility: 1 Day to 3 Years
Enrollment: 7 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2021
U.S. locations: 1
States / cities: Pittsburgh, Pennsylvania

Conditions: Chronic Pain Following Thermal Burn Injury
Interventions: Omega-3 fatty acids (fish oil), Vitamin D3 (cholecalciferol), Vitamin D3 (cholecalciferol) placebo, Omega-3 fatty acid placebo; Drug
Lead sponsor: University of North Carolina, Chapel Hill; Other
Eligibility: 18 Years to 65 Years
Enrollment: 24 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2018 – 2020
U.S. locations: 1
States / cities: Chapel Hill, North Carolina

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Comparison of Absorption of Vitamin D in Cystic Fibrosis

Thiazolidinedione Intervention With Vitamin D Evaluation

Evaluate Effects of Sprinkled Format REDUCOSE in a Carbohydrate-rich, Mixed Meal on Post-prandial Glycemia

Vitamin D3 in Systemic Lupus Erythematosus

Evaluating the Efficacy of the Flush Advanced+ Dietary Supplement Drink Mix Compared to a Placebo in Women Ages 18-75 With a History of Recurrent, Bothersome Urinary Tract Symptoms

Vitamin D2, Muscle Damage, NASCAR Pitcrew

Effects of a Female Hormone Balance Supplement on Symptoms of Polycystic Ovary Syndrome and Severe Premenstrual Syndrome

Nutrition Support to Improve Outcomes in Patients With Unresectable Pancreatic Cancer

Introduction and Maintenance of Still Eating Protein Blends in Support of Infant Nutritional Goals

PUSH Plus Protein Pilot for Hip Fracture Patients

Efficacy and Safety of Burosumab Versus Oral Phosphate and Active Vitamin D Treatment in Pediatric Patients With XLH

Comparative Effectiveness of Vitamin D and Repletion Strategies

Chronic Study on Body Composition, Training, Performance, and Recovery

Exercise and NutraStem (NT-020): Effects on Stem Cells

Immune Mechanisms of Vitamin D to Reduce Chronic Pain After Burn

Trifecta Research Study

Effects of Vitamin D-Enriched Mushrooms on Vitamin D Status and Immune Function and Inflammatory Status in Adults

Effects of Vitamin D on Cardiovascular Health in Black Women

Acute Study on Muscle Soreness, Damage, and Performance

The Benefits of Natural Medicine, Vitamin IV Therapy and Supplements: Maintaining Good Health Through Nature

Perianal Maceration in Pediatric Ostomy Closure Patients

Vitamin D and n-3 Polyunsaturated Fatty Acids (PUFAs) to Prevent Chronic Pain Following Major Thermal Burn Injury