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ClinicalTrials.gov public records Last synced Oct 22, 2026, 4:59 PM EDT

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Showing 505–528 of 604 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Dietary Deficiency Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Dose-response Enteral Citrulline for Normal Healthy Volunteers and Surgery Patients

NCT00950976
View directory record Official record
Conditions
Nutritional Deficiency
Interventions
citrulline, Lemonade
Other
Lead sponsor
Société des Produits Nestlé (SPN)
Industry
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 25, 2012 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional Results available

Diet, Exercise, Niacin, and Fenofibrate to Reduce Heart Disease Risk Factors in Individuals With HIV Lipodystrophy or Dyslipidemia

NCT00246376
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, HIV Infections, Hyperlipidemia, Hypertriglyceridemia, Insulin Resistance, Atherosclerosis
Interventions
Diet, Exercise, Niacin, Fenofibrate, Placebos
Behavioral · Drug · Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 21, 2016 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional

Study of Health Promotion in Patients With Early-Stage Breast or Prostate Cancer

NCT00037024
View directory record Official record
Conditions
Breast Cancer, Depression, Fatigue, Malnutrition, Prostate Cancer, Psychosocial Effects of Cancer and Its Treatment
Interventions
fatigue assessment and management, nutritional support, physical therapy, psychosocial assessment and care, quality-of-life assessment
Procedure
Lead sponsor
Duke University
Other
Eligibility
65 Years to 120 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 23, 2017 · Synced Oct 22, 2026, 4:59 PM EDT
Not listed No phase listed Observational

Malnutrition, Diet and Racial Disparities in Chronic Kidney Disease (CKD)

NCT01415570
View directory record Official record
Conditions
Chronic Kidney Disease (CKD), End-Stage Renal Disease (ESRD)
Interventions
Not listed
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
1,050 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated May 21, 2015 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness of a Nutraceutical in Raising Circulating Serum Vitamin, Mineral and Amino Acid Levels in Patients.

NCT04054505
View directory record Official record
Conditions
Vitamin Deficiency
Interventions
EZPAK, Placebo
Dietary Supplement
Lead sponsor
Optimal Health Research
Other
Eligibility
26 Years to 75 Years
Enrollment
275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 10, 2024 · Synced Oct 22, 2026, 4:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vitamin D and HIV-Cardiovascular Disease in Children and Young Adults

NCT01410305
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Not listed
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
8 Years to 25 Years
Enrollment
290 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
2
States / cities
Atlanta, Georgia • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 28, 2016 · Synced Oct 22, 2026, 4:59 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Primary Hyperparathyroidism (PHPT): Early Effect of Vitamin D

NCT01329666
View directory record Official record
Conditions
Primary Hyperparathyroidism, Hypercalcemia, Vitamin D Deficiency, Osteoporosis, Osteopenia
Interventions
Placebo, Vitamin D3
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
45 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 5, 2015 · Synced Oct 22, 2026, 4:59 PM EDT
Recruiting Phase 3 Interventional

OPI-NXYDLD-303 Safety and Efficacy of Phentolamine Ophthalmic Solution in Keratorefractive Surgery Participants With Decreased Mesopic Visual Acuity

NCT07140783
View directory record Official record
Conditions
Vision Loss Night, Vision Disorders
Interventions
0.75% Phentolamine Ophthalmic Solution, Placebo
Drug
Lead sponsor
Opus Genetics, Inc
Industry
Eligibility
18 Years and older
Enrollment
580 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
20
States / cities
Chandler, Arizona • Phoenix, Arizona • Scottsdale, Arizona + 16 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Evaluating the Effects of an Oral Protein Supplement on Children's Growth Patterns

NCT06329388
View directory record Official record
Conditions
Growth Disorders, Dietary Exposure, Child Development, Bone Development Abnormal, Body Weight, Child Malnutrition
Interventions
TruHeight Growth Protein Shake
Dietary Supplement
Lead sponsor
TruHeight Vitamins
Industry
Eligibility
4 Years to 17 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 26, 2024 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety and Efficacy Study of Asfotase Alfa in Severely Affected Infants With Hypophosphatasia (HPP)

NCT00744042
View directory record Official record
Conditions
Hypophosphatasia (HPP)
Interventions
asfotase alfa
Biological
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
Up to 36 Months
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
6
States / cities
Little Rock, Arkansas • Wilmington, Delaware • Springfield, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2019 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Treatment of Vitamin D Insufficiency

NCT00933244
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
High Dose Vitamin D3, Low Dose Vitamin D3, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Up to 75 Years · Female only
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Oct 22, 2026, 4:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study Vitamin D in Healthy Individuals

NCT02250625
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Not listed
Lead sponsor
Fujirebio Diagnostics, Inc.
Industry
Eligibility
Not listed
Enrollment
482 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated May 22, 2015 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Blood Pressure in Blacks and Calcium (BBC) and Vitamin D Study

NCT03070483
View directory record Official record
Conditions
Hypertension, Vitamin D Deficiency
Interventions
Cholecalciferol
Drug
Lead sponsor
Loyola University
Other
Eligibility
25 Years to 45 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 24, 2020 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional Results available

Cholecalciferol (Vitamin D3) Therapy in Chronic Kidney Disease (CKD) Subjects

NCT00427037
View directory record Official record
Conditions
Chronic Kidney Disease, Vitamin D Deficiency
Interventions
Cholecalciferol, Placebo
Drug
Lead sponsor
Atlanta VA Medical Center
Federal
Eligibility
18 Years to 85 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 22, 2015 · Synced Oct 22, 2026, 4:59 PM EDT
Completed No phase listed Observational

FGF23 and Angiotensin-(1-7) in Hypophosphatemia (GAP)

NCT03489993
View directory record Official record
Conditions
Hypophosphatemia, X-linked Hypophosphatemia, Renin-angiotensin System, Left Ventricular Hypertrophy
Interventions
Ang II and Ang-(1-7), FGF23 and klotho
Diagnostic Test
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
2 Years to 24 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 5, 2022 · Synced Oct 22, 2026, 4:59 PM EDT
Completed No phase listed Observational

VA Nutrition Study on Immune Function

NCT00105625
View directory record Official record
Conditions
Malnutrition, Infection, Nosocomial Infection
Interventions
Not listed
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
55 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 7, 2015 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional

A Multi-Component Behavioral Nutrition Intervention for Homebound Elderly

NCT01197768
View directory record Official record
Conditions
Undernutrition
Interventions
Nutrition Intervention
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
65 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 14, 2011 · Synced Oct 22, 2026, 4:59 PM EDT
Completed No phase listed Observational Results available

Non-interventional Substudy of ALX-HPP-502 to Assess Natural History of Patients With Juvenile-onset HPP Who Served as Historical Controls in ENB-006-09

NCT02235493
View directory record Official record
Conditions
Hypophosphatasia, Bone Disease
Interventions
Retrospective Case Only
Biological
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
5 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 13, 2019 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional Results available

Vitamin D, Insulin Resistance, and Cardiovascular Disease

NCT00736632
View directory record Official record
Conditions
Vitamin D Deficiency, Insulin Resistance, Type 2 Diabetes Mellitus, Cardiovascular Disease, Hypertension
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
25 Years to 80 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 10, 2020 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified Juice

NCT01909063
View directory record Official record
Conditions
Vitamin D Deficiency, Hypovitaminosis A, Vitamin E Deficiency
Interventions
Vitamin D, Vitamin D, Vitamin E, and Vitamin A, Control, 700 mg Calcium
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
6 Years to 10 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 28, 2017 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Phase 3 Interventional Results available

Vitamin D and Arterial Function in Patients With Chronic Kidney Disease

NCT01384539
View directory record Official record
Conditions
Arterial Dysfunction, Chronic Kidney Disease
Interventions
Cholecalciferol, Calcitriol
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 80 Years
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 28, 2018 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Effect of SLC19A3 Inhibition on the Pharmacokinetics of Thiamine

NCT03746106
View directory record Official record
Conditions
Vitamin B1 Deficiency, Thiamine Deficiency
Interventions
Trimethoprim, Metformin, Vitamin B1
Drug · Dietary Supplement
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 3, 2025 · Synced Oct 22, 2026, 4:59 PM EDT
Completed Not applicable Interventional

Improving Safety of Diagnosis and Therapy in the Inpatient Setting

NCT04393909
View directory record Official record
Conditions
Delirium, Confusion, Mental Status Change, Back Pain, Hip Pain Chronic, Chest Pain, Asthma, COPD, Cellulitis, Soft Tissue Infections, Cough, Deep Vein Thrombosis, Pulmonary Embolism, Venous Thromboembolism, Dyspnea, Electrolyte Metabolism Abnormal, Fever, Failure to Thrive, Weakness, Protein-Calorie Malnutrition, Headache, Neck Pain, Hypoxia, Pneumonia, Sepsis, Syncope, Vomiting, Diarrhea, Leg Pain, Abdominal Pain
Interventions
Diagnostic Uncertainty Educational Curriculum, Diagnostic Timeout, Patient Diagnostic (Dx) Questionnaire, Enhancements to Epic-integrated Quality & Safety Dashboard
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 26, 2022 · Synced Oct 22, 2026, 4:59 PM EDT
Active, not recruiting No phase listed Observational

Comprehensive Nutritional Geriatric Assessments in Identifying Malnutrition in Older Cancer Participants

NCT03035604
View directory record Official record
Conditions
Hematopoietic and Lymphoid Cell Neoplasm, Malignant Solid Neoplasm
Interventions
Comprehensive Geriatric Assessment
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
65 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 22, 2026, 4:59 PM EDT