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ClinicalTrials.gov public records Last synced Oct 24, 2026, 1:38 PM EDT

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Showing 49–72 of 180 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: B12 Clear all
Terminated Not applicable Interventional Accepts healthy volunteers

An Exploratory, Randomized, Blinded, Placebo-Controlled Trial of Folic Acid and L-methylfolate in Parkinson's Disease

NCT00853879
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Folic Acid, Vitamin B6, Vitamin B12, B6, B12, L-methylfolate, B6, B12, Placebo
Dietary Supplement
Lead sponsor
Northwell Health
Other
Eligibility
30 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated May 15, 2015 · Synced Oct 24, 2026, 1:38 PM EDT
Not listed Not applicable Interventional

Vitamin B6, B12, Folic Acid and Exercise in Parkinson's Disease

NCT01238926
View directory record Official record
Conditions
Parkinson's Disease
Interventions
PD vitamin supplementation, PD exercise intervention, PD vitamin + exercise
Dietary Supplement · Other
Lead sponsor
New York Institute of Technology
Other
Eligibility
50 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Old Westbury, New York
Source: ClinicalTrials.gov public record
Updated Nov 11, 2010 · Synced Oct 24, 2026, 1:38 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 24, 2012 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment of a Pre-Workout Dietary Supplement

NCT02952014
View directory record Official record
Conditions
Dietary Modification
Interventions
C4 Extreme, C4 Extreme (without Advantra Z, Placebo
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 40 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Early Phase 1 Interventional Results available

Treatment of HFpEF With Nitrate Supplement

NCT03289481
View directory record Official record
Conditions
Heart Failure With Normal Ejection Fraction
Interventions
Active lozenge, Placebo
Dietary Supplement · Drug
Lead sponsor
MaineHealth
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Rockport, Maine
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Oct 24, 2026, 1:38 PM EDT
Completed No phase listed Observational

Vitamins, Breastmilk HIV Shedding, and Child Health

NCT00197756
View directory record Official record
Conditions
Maternal and Child Health Outcomes
Interventions
Vitamin A alone, Multivitamins excluding vitamin A, multivitamins including vitamin A, Placebo
Dietary Supplement · Other
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years and older · Female only
Enrollment
771 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 21, 2009 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Phase 2 Interventional Results available

Evaluation of Efficacy and Safety of PLN-74809 in Patients With Idiopathic Pulmonary Fibrosis

NCT04396756
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
PLN-74809, Placebo
Drug
Lead sponsor
Pliant Therapeutics, Inc.
Industry
Eligibility
40 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
10
States / cities
Phoenix, Arizona • Los Angeles, California • New Haven, Connecticut + 7 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2024 · Synced Oct 24, 2026, 1:38 PM EDT
Not listed Phase 1 Interventional

Study of Pembrolizumab With Pemetrexed and Oxaliplatin in Chemo-Refractory Metastatic Colorectal Cancer Patients

NCT03626922
View directory record Official record
Conditions
Metastatic Colorectal Cancer
Interventions
Pembrolizumab, Pemetrexed, Oxaliplatin, Dexamethasone, Folic Acid, Vitamin B-12
Drug · Dietary Supplement
Lead sponsor
NSABP Foundation Inc
Network
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
15
States / cities
Gainesville, Florida • Decatur, Illinois • Effingham, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2022 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safety and Tolerability of a Novel Amino-acid Based Hydration Drink in Healthy Volunteers

NCT05592951
View directory record Official record
Conditions
Safety, Tolerance
Interventions
Crystal Light (once serving), Liquid IV with amino acids (one serving), Liquid IV with amino acids (two servings), Liquid IV with amino acids (three servings)
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 26, 2023 · Synced Oct 24, 2026, 1:38 PM EDT
Recruiting Not applicable Interventional

Changes in Movement, Fitness, and Quality of Life in People With Parkinson's Disease After Different Exercise Programs

NCT07221266
View directory record Official record
Conditions
Parkinson Disease (PD)
Interventions
Guided Cycling, Non-Contact Boxing, Traditional Physical Therapy Program (Standard of Care)
Behavioral
Lead sponsor
University of Texas, El Paso
Other
Eligibility
50 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
2
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2026 · Synced Oct 24, 2026, 1:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Using Iodized Salt to Improve Serum Folate, B12 and Iron Levels

NCT06904612
View directory record Official record
Conditions
Neural Tube Defects, Folic Acid Deficiency, Spina Bifida, Anencephaly-Spina Bifida, B12 Deficiency Vitamin, Anemia, Iron Deficiency Anaemia Due to Dietary Causes
Interventions
Micronutrient fortified iodized salt
Dietary Supplement
Lead sponsor
Hydrocephalus and Neuroscience Institute
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Oct 24, 2026, 1:38 PM EDT
Not yet recruiting Not applicable Interventional

A Plant-Based Diet in the Treatment of Coronary Microvascular Dysfunction

NCT07821372
View directory record Official record
Conditions
Coronary Microvascular Dysfunction
Interventions
Polyphenol-Rich Plant-Based Diet
Other
Lead sponsor
Emory University
Other
Eligibility
45 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Oct 24, 2026, 1:38 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 4, 2026 · Synced Oct 24, 2026, 1:38 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional

PACE: Prostacyclin AntiCoagulation in ECMO

NCT07837869
View directory record Official record
Conditions
ECMO
Interventions
Dose-escalation study of epoprostenol as adjunct anticoagulation in ECMO
Drug
Lead sponsor
Garrett Keim
Other
Eligibility
0 Days to 17 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Phase 2 Interventional Results available

Phase 2 Trial of Bevacizumab in Combination With Pemetrexed

NCT00227019
View directory record Official record
Conditions
Non-small Cell Lung Cancer (NSCLC), Lung Cancer, Neoplasm Metastasis
Interventions
Bevacizumab, Pemetrexed, Vitamin B12, Folate, Dexamethasone
Drug
Lead sponsor
Heather Wakelee
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
4
States / cities
Stanford, California • Lebanon, New Hampshire • Voorhees Township, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 6, 2017 · Synced Oct 24, 2026, 1:38 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Metanx® P.L.U.S. Program (Progress Through Learning, Understanding & Support)

NCT01368549
View directory record Official record
Conditions
Diabetic Peripheral Neuropathy
Interventions
Metanx® (a medical food)
Other
Lead sponsor
Pamlab, L.L.C.
Industry
Eligibility
18 Years to 80 Years
Enrollment
800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Montgomery, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 11, 2012 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Phase 3 Interventional Results available

A Randomized Phase III Study of Vitamins B6 and B12 to Prevent Chemotherapy-Induced Neuropathy in Cancer Patients

NCT00659269
View directory record Official record
Conditions
Cancer
Interventions
Multivitamin (MV), Multivitamin + Vitamin B12 + Vitamin B6, Chemotherapy
Dietary Supplement · Drug
Lead sponsor
New Mexico Cancer Research Alliance
Other
Eligibility
18 Years and older
Enrollment
319 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
5
States / cities
Albuquerque, New Mexico • Santa Fe, New Mexico
Source: ClinicalTrials.gov public record
Updated Feb 26, 2016 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Antenatal Micronutrient Supplementation and Infant Survival

NCT00860470
View directory record Official record
Conditions
Infant Mortality, Preterm Birth, Low Birth Weight, Neonatal Mortality, Perinatal Mortality
Interventions
Iron (27 mg) - folic acid (600 ug), Multiple micronutrient
Dietary Supplement
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
12 Years to 45 Years · Female only
Enrollment
44,567 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 19, 2022 · Synced Oct 24, 2026, 1:38 PM EDT
Not listed Phase 4 Interventional

Struvite Stones Antibiotic Study

NCT02375295
View directory record Official record
Conditions
Kidney Stones
Interventions
ciprofloxacin, cotrimoxazole-trimethoprim, macrodantin
Drug
Lead sponsor
University of British Columbia
Other
Eligibility
19 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
11
States / cities
Scottsdale, Arizona • San Diego, California • Baltimore, Maryland + 8 more
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Oct 24, 2026, 1:38 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 6, 2014 · Synced Oct 24, 2026, 1:38 PM EDT
Not listed Phase 1Phase 2 Interventional

A Study of IBRF Disorders of Consciousness Advanced Care/MultiModal Care Protocol in Severe Disorders of Consciousness

NCT02696512
View directory record Official record
Conditions
Brain Injury
Interventions
Polypharmacy using FDA-approved products, Median Nerve Stimulation (MNS), Nutraceutical Supplementation, Standard of Care
Drug · Device · Dietary Supplement + 1 more
Lead sponsor
International Brain Research Foundation
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Edison, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 2, 2016 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Not applicable Interventional

Interaction of Cobalamin Status With Nitrous Oxide in Relation to Postoperative Cognitive Changes in the Elderly

NCT00212147
View directory record Official record
Conditions
Avitaminosis, Delirium, Dementia, Amnestic, Cognitive Disorders
Interventions
General anesthesia with nitrous oxide, General anesthesia without nitrous oxide
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
60 Years and older
Enrollment
444 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
2
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 8, 2022 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Phase 3 Interventional

Homocysteine Study (HOST)

NCT00032435
View directory record Official record
Conditions
End Stage Renal Disease, Renal Failure
Interventions
PAL-40 Active, PAL-40 Placebo
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
21 Years and older
Enrollment
2,003 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
36
States / cities
Birmingham, Alabama • Menlo Park, California • Palo Alto, California + 33 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2010 · Synced Oct 24, 2026, 1:38 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Study of Pralatrexate & Gemcitabine With B12 & Folic Acid to Treat Relapsed/Refractory Lymphoproliferative Malignancies

NCT00481871
View directory record Official record
Conditions
Relapsed or Refractory Lymphoproliferative Malignancies, Hodgkin's Lymphoma, Peripheral T-cell Lymphoma, B-cell Lymphoma, Waldenstrom's Macroglobulinemia
Interventions
Pralatrexate Injection, Gemcitabine Hydrochloride, Vitamin B12, Folic Acid
Drug · Dietary Supplement
Lead sponsor
Acrotech Biopharma Inc.
Industry
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
15
States / cities
Los Angeles, California • Stanford, California • Denver, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2020 · Synced Oct 24, 2026, 1:38 PM EDT