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Showing 1–24 of 170 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Cyanocobalamin Clear all
Completed No phase listed Observational Accepts healthy volunteers

Metformin Use and Vitamin B12 Deficiency

NCT01136512
View directory record Official record
Conditions
Vitamin B12 Deficiency, Type 2 Diabetes Mellitus
Interventions
Not listed
Lead sponsor
Northwell Health
Other
Eligibility
20 Years to 80 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Staten Island, New York
Source: ClinicalTrials.gov public record
Updated Jul 30, 2013 · Synced Sep 9, 2026, 6:10 AM EDT
Enrolling by invitation Phase 1 Interventional

A Safety and Feasibility Trial Protocol of Metformin in Infants After Perinatal Brain Injury

NCT06429007
View directory record Official record
Conditions
Hypoxic-Ischemic Encephalopathy, HIE, Neurodevelopment, Infant Development
Interventions
Metformin
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
3 Months to 6 Months
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Restoration of Cutaneous Sensorum in Patients With Diabetic Peripheral Neuropathy (DPN) Via Metanx®

NCT00933998
View directory record Official record
Conditions
Diabetic Peripheral Neuropathy
Interventions
Metanx® (Oral L-methylfolate, Methylcobalamin and Pyridoxal 5'-phosphate)
Other
Lead sponsor
Carolina Musculoskeletal Institute
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
Aiken, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 28, 2014 · Synced Sep 9, 2026, 6:10 AM EDT
Not listed Not applicable Interventional

B Vitamin Supplementation to Chiropractic Management of Chronic LBP: Pilot Clinical Trial (VCLBP)

NCT06576739
View directory record Official record
Conditions
Recurrent Low Back Pain
Interventions
Spinal Manipulation
Procedure
Lead sponsor
University of Western States
Other
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 28, 2024 · Synced Sep 9, 2026, 6:10 AM 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 1, 2016 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Phase 4 Interventional Results available

GLP-1 Therapy: The Role of IL-6 Signaling and Adipose Tissue Remodeling in Metabolic Response

NCT04387201
View directory record Official record
Conditions
Glucose Intolerance, Overweight and Obesity, Drug Effect, Adiposity
Interventions
Cyanocobalamin, Dulaglutide
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 50 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Phase 1 Interventional

Pemetrexed for the Treatment of Chordoma

NCT03955042
View directory record Official record
Conditions
Chordoma
Interventions
Pemetrexed
Drug
Lead sponsor
Saint John's Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Mar 6, 2023 · Synced Sep 9, 2026, 6:10 AM EDT
Recruiting Phase 1 Interventional

SHARON: A Clinical Trial for Metastatic Cancer Using Chemotherapy and Patients' Own Stem Cells

NCT04150042
View directory record Official record
Conditions
Pancreatic Adenocarcinoma Metastatic, BRCA1 Mutation, BRCA2 Mutation, Pancreatic Acinar Cell Carcinoma, Pancreatic Ductal Adenocarcinoma, Pancreatic Cancer, Metastatic Pancreatic Cancer, Metastatic Pancreatic Ductal Adenocarcinoma, Breast Cancer Metastatic, Breast Cancer Stage IV, Pancreatic Cancer Stage IV, HER2-negative Breast Cancer, HER2 Negative Breast Carcinoma, Adenocarcinoma of the Breast, PALB2 Gene Mutation, Pancreas Cancer, Metastatic, Pancreas Cancer, Recurrent, Pancreas Cancer, Stage IV Pancreatic Cancer, Stage 4 Pancreatic Cancer
Interventions
Melphalan, BCNU, Vitamin B12B, Vitamin C, Autologous Hematopoietic Stem Cells
Drug · Device
Lead sponsor
General Oncology, Inc.
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Carboplatin/Pralatrexate in Recurrent Platinum-Sensitive Ovarian, Fallopian or Primary Peritoneal Cancer

NCT01188876
View directory record Official record
Conditions
Ovarian Cancer, Fallopian Tube Cancer, Peritoneal Cancer
Interventions
carboplatin, pralatrexate, Folic Acid, Vitamin B12 Injection
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 18, 2018 · Synced Sep 9, 2026, 6:10 AM 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 9, 2026, 6:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Assess the Effects of a Vitamin Shot on Energy Levels

NCT06019858
View directory record Official record
Conditions
Energy, Fatigue, Mood, Weight Loss, Cognition
Interventions
Vitamin Energy Shot
Other
Lead sponsor
Vitamin Energy®
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 30, 2023 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Phase 3 Interventional Results available

A Study for Patients With Head and Neck Cancer

NCT00415194
View directory record Official record
Conditions
Head and Neck Neoplasms
Interventions
pemetrexed, cisplatin, placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
795 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
15
States / cities
Orange, California • Orlando, Florida • St. Petersburg, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2011 · Synced Sep 9, 2026, 6:10 AM EDT
Terminated Phase 2Phase 3 Interventional

Vitamin B12 Status and Response to Vitamin B12 Supplementation in Patients With Parkinson's Disease

NCT00208611
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Vitamin B12 Supplementation
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
21 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 17, 2014 · Synced Sep 9, 2026, 6:10 AM 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 5, 2021 · Synced Sep 9, 2026, 6:10 AM EDT
Withdrawn Early Phase 1 Interventional

Pilot Study of Pembrolizumab Combined With Pemetrexed or Abemaciclib for High Grade Glioma

NCT04220892
View directory record Official record
Conditions
High Grade Glioma
Interventions
Pembrolizumab, Pemetrexed, Abemaciclib
Drug
Lead sponsor
Jose Carrillo
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jul 30, 2020 · Synced Sep 9, 2026, 6:10 AM 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 9, 2026, 6:10 AM EDT
Completed Not applicable Interventional

Effect of High-Dose B-Complex Vitamins on the Symptoms of Schizophrenia

NCT00403247
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Capsule with folate, Vitamin B12 & pyridoxine, placebo
Dietary Supplement · Other
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Orangeburg, New York
Source: ClinicalTrials.gov public record
Updated Aug 22, 2007 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Not applicable Interventional

Randomized Study of Folic Acid Therapy for Hyperhomocysteinemia in Patients With End Stage Renal Disease Receiving Hemodialysis

NCT00004495
View directory record Official record
Conditions
End Stage Renal Disease, Hyperhomocysteinemia
Interventions
cyanocobalamin, folic acid, pyridoxine
Drug
Lead sponsor
Georgetown University
Other
Eligibility
21 Years to 89 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2000
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 24, 2015 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Phase 1 Interventional

Open Label Study: Treatment of ALS Fatigue With PolyMVA

NCT04557410
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
PolyMVA
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
Not listed
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 26, 2021 · Synced Sep 9, 2026, 6:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

NAC-003 P.L.U.S. Program (Progress Through Learning Understanding & Support)

NCT01370954
View directory record Official record
Conditions
Early Memory Loss, Mild Cognitive Impairment, Alzheimer's Disease, Vascular Dementia
Interventions
CerefolinNAC®
Other
Lead sponsor
Pamlab, Inc.
Industry
Eligibility
50 Years to 80 Years
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Hickory, North Carolina
Source: ClinicalTrials.gov public record
Updated May 8, 2013 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Phase 2 Interventional Results available

A Phase II Study of Pemetrexed Plus Gemcitabine for Metastatic/Recurrent Head and Neck Cancer (HNSCC)

NCT00589667
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
Pemetrexed plus Gemcitabine
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 1, 2014 · Synced Sep 9, 2026, 6:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Retrospective Analysis of Neevo®/Neevo®DHA Compared to a Standard Prenatal Vitamin in Anemia During Pregnancy

NCT01062958
View directory record Official record
Conditions
Anemia in Pregnancy, Preeclampsia
Interventions
Neevo® (a medical food), Prenatal vitamins (≤1mg folic acid, 27 - 35mg iron, and ≤12mcg vitamin B12)
Other
Lead sponsor
Pamlab, Inc.
Industry
Eligibility
21 Years to 39 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
3
States / cities
Sheffield, Alabama • Flowood, Mississippi • Gainesville, Texas
Source: ClinicalTrials.gov public record
Updated Apr 15, 2013 · Synced Sep 9, 2026, 6:10 AM EDT
Completed Not applicable Interventional Results available

Impact of Vitamin B12 Replacement on Epogen Dosing and Improvement of Quality of Life in Hemodialysis Patients

NCT01876732
View directory record Official record
Conditions
Vitamin B12 Deficiency
Interventions
Vitamin B12
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 90 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Staten Island, New York
Source: ClinicalTrials.gov public record
Updated Sep 7, 2014 · Synced Sep 9, 2026, 6:10 AM EDT
Not listed Not applicable Interventional

Can Lifestyle Changes Reverse Early-Stage Alzheimer's Disease

NCT04606420
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Lifestyle medicine
Behavioral
Lead sponsor
Preventive Medicine Research Institute
Other
Eligibility
45 Years to 90 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
4
States / cities
San Diego, California • Sausalito, California • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2022 · Synced Sep 9, 2026, 6:10 AM EDT