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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: vitamin K Clear all
Completed Not applicable Interventional

Daily Vitamin K in Patients on Warfarin With Unstable INRs

NCT00287313
View directory record Official record
Conditions
Anticoagulants, Warfarin
Interventions
Vitamin K
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 11, 2010 · Synced Sep 29, 2026, 5:14 AM EDT
Active, not recruiting Not applicable Interventional

VITamin D and OmegA-3 TriaL: Interrelationship of Vitamin D and Vitamin K on Bone (VITAL)

NCT04573946
View directory record Official record
Conditions
Bone Density, Bone Health, Fractures
Interventions
Vitamin D3 placebo, Fish oil placebo, Omega-3 fatty acids (fish oil), Vitamin D3
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years and older
Enrollment
25,871 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 29, 2026, 5:14 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Vitamin K to Slow Progression of Dyslipidemia and Diabetes Risk (Vita-K 'n' Kids Study II)

NCT02959762
View directory record Official record
Conditions
Obesity, Insulin Resistance, Obesity in Diabetes, Nutritional and Metabolic Diseases, Hyperlipidemia, Hyperglycemia, Cardiovascular Diseases
Interventions
Placebo-Control, Low-Dose Vitamin K2 (menaquinone-7; 45-mcg/d), High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)
Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
8 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 19, 2019 · Synced Sep 29, 2026, 5:14 AM EDT
Recruiting Phase 4 Interventional

Vitamin K for Perioperative Warfarin Management

NCT07515664
View directory record Official record
Conditions
Anticoagulant Therapy
Interventions
Vitamin K, Warfarin (standard without loading), Warfarin (standard with loading)
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional

Safety and Efficacy Trial Evaluating the Use of SR34006 in the Treatment of Deep Vein Thrombosis (DVT)

NCT00067093
View directory record Official record
Conditions
Deep Vein Thrombosis
Interventions
SanOrg34006, LMW heparin, Unfractionated heparin, Vitamin K antagonist (VKA)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
1,452 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
24
States / cities
Denver, Colorado • Jacksonville, Florida • Melbourne, Florida + 21 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2011 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Determinants of Vitamin K Metabolism

NCT00336232
View directory record Official record
Conditions
Aging, Osteoporosis
Interventions
Vitamin K
Drug
Lead sponsor
Tufts University
Other
Eligibility
18 Years to 90 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 28, 2023 · Synced Sep 29, 2026, 5:14 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Vitamin K and Glucose Metabolism in Children at Risk for Diabetes (Vita-K 'n' Kids Study)

NCT01972113
View directory record Official record
Conditions
Obesity, Insulin Resistance, Insulin Sensitivity, Prediabetes, Dyslipidemia, Diabetes
Interventions
Placebo-Control, Low-Dose Vitamin K2 (menaquinone-7; 45 mcg/d), High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)
Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
8 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2020
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Vitamin K and Bone Turnover in Postmenopausal Women

NCT00062595
View directory record Official record
Conditions
Osteoporosis
Interventions
phylloquinone (K1), menatetranone (MK4)
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
Female only
Enrollment
375 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2004
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 16, 2016 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Melatonin-Micronutrients for Osteopenia Treatment Study

NCT01870115
View directory record Official record
Conditions
Osteoporosis, Osteopenia
Interventions
Fiber Pill, Melatonin, Strontium citrate, Vitamins D3 and K2
Dietary Supplement
Lead sponsor
Duquesne University
Other
Eligibility
Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 13, 2018 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 2 Interventional Results available

A Study of the Safety and Pharmacokinetics of Apixaban Versus Vitamin K Antagonist (VKA) or Low Molecular Weight Heparin (LMWH) in Pediatric Subjects With Congenital or Acquired Heart Disease Requiring Anticoagulation

NCT02981472
View directory record Official record
Conditions
Thrombosis
Interventions
Apixaban, Vitamin K Antagonist (VKA), Low Molecular Weight Heparin (LMWH)
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
28 Days to 17 Years
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
14
States / cities
Phoenix, Arizona • La Jolla, California • Aurora, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2022 · Synced Sep 29, 2026, 5:14 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Vitamin K and Glucose Metabolism in Adults at Risk for Diabetes (Vita-K 'n' Adults Study)

NCT02366481
View directory record Official record
Conditions
Obesity, Insulin Resistance, Insulin Sensitivity, Beta-Cell Dysfunction, Prediabetes
Interventions
Placebo, Low-Dose Vitamin K2 Supplement (menaquinone-7; 90-mcg/d), High-Dose Vitamin K2 Supplement (menaquinone-7; 180-mcg/d)
Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 19, 2019 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional Results available

Explore the Efficacy and Safety of Once-daily Oral Rivaroxaban for the Prevention of Cardiovascular Events in Subjects With Nonvalvular Atrial Fibrillation Scheduled for Cardioversion

NCT01674647
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Rivaroxaban (Xarelto, BAY59-7939), Vitamin K antagonist (VKA)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
1,504 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
66
States / cities
Mobile, Alabama • Scottsdale, Arizona • East Palo Alto, California + 58 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 4 Interventional Results available

Fixed Versus Variable Dosing of 4-factor Prothrombin Complex Concentrate for Emergent Warfarin Reversal

NCT03064035
View directory record Official record
Conditions
Acute Bleeding on Long-Term Anticoagulation Therapy, Hemorrhage, Significant Bleeding in Patients With a Coagulopathy (Prolonged Thrombin Time), Urgent Reversal of Vitamin K Antagonist (VKA) Anticoagulation
Interventions
4-factor prothrombin complex concentrate (4FPCC)
Drug
Lead sponsor
HealthPartners Institute
Other
Eligibility
18 Years to 125 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 13, 2023 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 2 Interventional Results available

A Clinical Trial of Epizon-701 (EPN-701) in Subjects With End-Stage Renal Disease (ESRD)

NCT05285787
View directory record Official record
Conditions
End-Stage Renal Disease (ESRD)
Interventions
EPN-701 (Oral)
Drug
Lead sponsor
Epizon Pharma, Inc.
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 24, 2024 · Synced Sep 29, 2026, 5:14 AM EDT
Completed No phase listed Observational Results available

RE-COVERY DVT/PE: Global Study on Treatment Secondary Prevention of Acute Venous Thromboembolism

NCT02596230
View directory record Official record
Conditions
Venous Thromboembolism
Interventions
Not listed
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
7,797 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
19
States / cities
Long Beach, California • Miami, Florida • Pembroke Pines, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2020 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional Results available

An Open-label, Randomized, Multicenter Phase IIIb Study to Assess the Efficacy, Safety and Tolerance of BERIPLEX® P/N (Kcentra) Compared With Plasma for Rapid Reversal of Coagulopathy Induced by Vitamin K Antagonists in Subjects Requiring an Urgent Surgical Procedure

NCT00803101
View directory record Official record
Conditions
Reversal of Coagulopathy
Interventions
Beriplex® P/N (Kcentra), Fresh frozen plasma
Biological
Lead sponsor
CSL Behring
Industry
Eligibility
18 Years and older
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
16
States / cities
Newark, Delaware • Lexington, Kentucky • Boston, Massachusetts + 13 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2015 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study With a Potential Alzheimer's Disease Compound

NCT00726726
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Interacting drugs - Cooperstown Cocktail (midazolam, warfarin, (+ vitamin K), caffeine, omeprazole and dextromethorphan), BMS-708163, BMS-708163 + Cooperstown Cocktail
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 4, 2008 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional Results available

Edoxaban vs. Warfarin in Subjects Undergoing Cardioversion of Nonvalvular Atrial Fibrillation (NVAF)

NCT02072434
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Edoxaban, Warfarin, Enoxaparin
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years and older
Enrollment
2,199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
28
States / cities
Phoenix, Arizona • Escondido, California • Newport Beach, California + 25 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2019 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 1 Interventional

A Study to Evaluate the Effect of Intravenous (IV) Infusions of Risankizumab on Pharmacokinetics of Cytochome P450 Substrates in Adult Participants With Moderately to Severely Active Ulcerative Colitis or Crohn's Disease

NCT04254783
View directory record Official record
Conditions
Ulcerative Colitis (UC), Crohn's Disease
Interventions
Risankizumab, Cytochrome P450 (CYP) Substrates
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
4
States / cities
Coronado, California • DeLand, Florida • Margate, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2024 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional Results available

Oral Direct Factor Xa Inhibitor Rivaroxaban in Patients With Acute Symptomatic Pulmonary Embolism - The EINSTEIN PE Study

NCT00439777
View directory record Official record
Conditions
Pulmonary Embolism
Interventions
Rivaroxaban (Xarelto, BAY59-7939), Enoxaparin overlapping with and followed by VKA
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
4,833 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
23
States / cities
Little Rock, Arkansas • Redlands, California • Bay Pines, Florida + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2014 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional Results available

Open Label Study Comparing Efficacy and Safety of Dabigatran Etexilate to Standard of Care in Paediatric Patients With Venous Thromboembolism (VTE)

NCT01895777
View directory record Official record
Conditions
Venous Thromboembolism
Interventions
dabigatran etexilate, standard of care
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
Up to 17 Years
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
9
States / cities
Sacramento, California • Miami, Florida • Tampa, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2020 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 1 Interventional Results available

A Study of Mirikizumab in Participants With Plaque Psoriasis

NCT03718884
View directory record Official record
Conditions
Psoriasis
Interventions
Drug Cocktail, Mirikizumab
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
3
States / cities
Anaheim, California • DeLand, Florida • High Point, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 28, 2024 · Synced Sep 29, 2026, 5:14 AM EDT
Completed Phase 3 Interventional Results available

EINSTEIN Junior: Oral Rivaroxaban in Children With Venous Thrombosis

NCT02234843
View directory record Official record
Conditions
Venous Thromboembolism
Interventions
Rivaroxaban (Xarelto, BAY59-7939), Standard of Care
Drug
Lead sponsor
Bayer
Industry
Eligibility
Up to 17 Years
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
23
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2020 · Synced Sep 29, 2026, 5:14 AM EDT
Active, not recruiting Not applicable Interventional

Effects of Vitamin K on Lower-extremity Function in Adults With Osteoarthritis:

NCT05505552
View directory record Official record
Conditions
Osteo Arthritis Knee
Interventions
Vitamin K, Placebo
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
50 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
3
States / cities
Boston, Massachusetts • Worcester, Massachusetts • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Sep 29, 2026, 5:14 AM EDT