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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Vitamin B-Complex Supplement Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults

NCT02876315
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Redoxon VI, placebo
Dietary Supplement
Lead sponsor
Oregon State University
Other
Eligibility
55 Years to 75 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Corvallis, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Results available

Alii Supplement Study

NCT07271316
View directory record Official record
Conditions
Nutrient Deficiency, Happiness, Digestive Health, Vulnerability to Disease, Mood Swings, Energy
Interventions
Alii Supplement
Dietary Supplement
Lead sponsor
Texas Christian University
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 2 Interventional

A Clinical Trial of a Vitamin/Nutriceutical Formulation for Alzheimer's Disease

NCT01320527
View directory record Official record
Conditions
Alzheimer's Disease, Mild Cognitive Impairment
Interventions
Nutriceutical formulation, Placebo
Dietary Supplement · Other
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
40 Years and older
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
8
States / cities
Naples, Florida • Baltimore, Maryland • Ayer, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2016 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Results available

Males, Antioxidants, and Infertility Trial

NCT02421887
View directory record Official record
Conditions
Male Infertility
Interventions
Antioxidant Supplement, Placebo
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older · Male only
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
10
States / cities
Los Angeles, California • San Francisco, California • Sunnyvale, California + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2019 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Results available

Pemetrexed and Gemcitabine in Patients With Advanced Non-Small Cell Lung Cancer

NCT00193414
View directory record Official record
Conditions
Lung Cancer
Interventions
Pemetrexed, Gemcitabine
Drug
Lead sponsor
SCRI Development Innovations, LLC
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 2, 2022 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Not applicable Interventional

The Effect of Methylated Vitamin B Complex on Depression

NCT01672372
View directory record Official record
Conditions
Depression
Interventions
Max Stress B, Placebo Max Stress B
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 5, 2014 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Vitamin B6 Effects for Women Taking Birth Control Pills

NCT01128244
View directory record Official record
Conditions
Vitamin B6 Deficiency
Interventions
Vitamin B6, Infusion of labeled serine, methionine and leucine
Dietary Supplement · Procedure
Lead sponsor
University of Florida
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 6, 2017 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Not applicable Interventional Results available

Dietary Supplements for the Treatment of Angelman Syndrome

NCT00348933
View directory record Official record
Conditions
Angelman Syndrome, Nervous System Diseases
Interventions
Betaine, Creatine, Metafolin, Vitamin B12
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
1 Day to 5 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
4
States / cities
San Diego, California • Boston, Massachusetts • Greenwood, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2012 · Synced Sep 26, 2026, 2:04 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

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

NCT05067998
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Screening for Metabolic Problems in Mothers of Children With Autism and Typically Developing Children

NCT02674022
View directory record Official record
Conditions
Pregnancy, Autistic Disorder, Folic Acid Deficiency
Interventions
Prenatal supplement
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 18, 2020 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Dietary Supplement on Exercise Performance in Healthy Older Adults"

NCT01073332
View directory record Official record
Conditions
Excessive Physical Exercise, Unspecified
Interventions
Arginine antioxidant supplements, Placebo
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years to 75 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 7, 2015 · Synced Sep 26, 2026, 2:04 PM EDT
Recruiting Not applicable Interventional

B6 Administration for Levetiracetam-Associated Neurobehavioral Changes and Epilepsy

NCT07271966
View directory record Official record
Conditions
Brain Tumor Related Epilepsy (BTRE)
Interventions
Vitamin B6 100 MG
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 2 Interventional Results available

Study of Pralatrexate to Treat Participants With Relapsed or Refractory B-cell Non-Hodgkin's Lymphoma

NCT00998946
View directory record Official record
Conditions
Lymphoma, B-Cell
Interventions
Pralatrexate, Vitamin B12, Folic Acid
Drug · Dietary Supplement
Lead sponsor
Spectrum Pharmaceuticals, Inc
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
11
States / cities
Beverly Hills, California • Post Falls, Idaho • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 26, 2026, 2:04 PM EDT
Withdrawn Phase 4 Interventional

EnBrace HR for PMS With Prominent Mood Symptoms or Menstrual Related Mood Disorders

NCT04123483
View directory record Official record
Conditions
Premenstrual Syndrome, Premenstrual Dysphoric Disorder, Premenstrual Tension, Menstrual Related Mood Disorder
Interventions
EnBrace HR Softgel
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 52 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 1, 2020 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Exploratory Investigation of a Supplement to Promote Cognitive Health Benefits

NCT05523115
View directory record Official record
Conditions
Anxiety, Stress, Memory Deficits, Cortisol Overproduction
Interventions
Heights Smart Supplement
Dietary Supplement
Lead sponsor
Heights
Industry
Eligibility
21 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Sep 26, 2026, 2:04 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Study of a Dietary Supplement on Serum Biomarkers in Children

NCT07385144
View directory record Official record
Conditions
Nutritional Status, Serum Biomarkers
Interventions
Dietary Supplement (Kids Multi & Omegas)
Dietary Supplement
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
4 Years to 15 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Community Trial of Zinc Supplementation on Preschool Child Mortality and Morbidity in Southern Nepal

NCT00109551
View directory record Official record
Conditions
Nutrition
Interventions
zinc sulphate dietary supplement, iron sulphate-folic acid dietary supplement
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
1 Month to 36 Months
Enrollment
58,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2006
U.S. locations
2
States / cities
Baltimore, Maryland • Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Sep 26, 2026, 2:04 PM EDT
Withdrawn Not applicable Interventional

Vitamin B12 for Aromatase Inhibitors Associated Musculoskeletal Symptoms in Breast Cancer

NCT04205786
View directory record Official record
Conditions
HR-positive Breast Cancer
Interventions
Vitamin B12, Blood collection, Brief Pain Inventory - Short Form survey, FACT-ES Trial Outcome Index (Version 4), Questionnaire to Assess Adherence to Aromatase Inhibitors, Demographics Questionnaire
Dietary Supplement · Other
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
19 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 20, 2024 · Synced Sep 26, 2026, 2:04 PM EDT
Terminated Phase 2 Interventional Results available

MemoryXL Effects on Mild Cognitive Impairment Patients

NCT00903695
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Memory XL, placebo
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
55 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jan 25, 2012 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Low-dose Iron Supplementation and Markers of Iron Status Among Non-anemic, Iron-deficient Women

NCT02683369
View directory record Official record
Conditions
Non-anemic Iron Deficiency
Interventions
Blood Builder®/Iron Response®
Dietary Supplement
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 1 Interventional

Nutrition, Neuromuscular Electrical Stimulation (NMES) and Secondary Progressive Multiple Sclerosis (SPMS)

NCT01381354
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Progressive exercise, Neuromuscular electrical stimulation delivered using the electrical therapy device EMPI 300 PV, Modified paleolithic diet, Omega 3 fatty acids, Full Spectrum vitamin, Essential - hydroxytyrosol, Maltodextrin fiber supplement, Mineral boost (magnesium), Niacinamide, Methyl B12, Taurine, creatine, thiamine, riboflavin, N acetylcysteine, alpha lipoic acid, L acetyl carnitine, methyl folate, coenzyme Q, meditation, self massage, learning, Coconut oil
Other · Device · Dietary Supplement + 1 more
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 25, 2018 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 4 Interventional Results available

A Study of Serum Folate Levels in Patients Treated With Olaparib

NCT04024254
View directory record Official record
Conditions
Ovarian Cancer, Breast Cancer, Folic Acid Deficiency
Interventions
Folic Acid Tablet
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study Evaluating Quality of Life Parameters Following Use of Emergen-C

NCT06654089
View directory record Official record
Conditions
Dietary Supplements
Interventions
Emergen-C Core Super Orange Powder, Placebo
Dietary Supplement
Lead sponsor
HALEON
Industry
Eligibility
18 Years to 64 Years
Enrollment
299 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 26, 2026, 2:04 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Lactation Fortification Study

NCT01747668
View directory record Official record
Conditions
Lactation
Interventions
Similac Prenatal Vitamin soft-gel capsule, Placebo (soybean oil and dl-alpha-tocopheryl acetate)
Dietary Supplement
Lead sponsor
Abbott Nutrition
Industry
Eligibility
18 Years and older · Female only
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
6
States / cities
Indianapolis, Indiana • Dayton, Ohio • Kettering, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated May 30, 2013 · Synced Sep 26, 2026, 2:04 PM EDT