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Vitamin K-absorption From Dairy

This study has been completed.
Information provided by:
Maastricht University Medical Center Identifier:
First received: June 30, 2009
Last updated: December 15, 2010
Last verified: December 2010
Lactic acid bacteria produce a mixture of higher menaquinones, including menaquinone-9 (MK-9) and menaquinone-10 (MK-10). Vitamin K1 (phylloquinone) is normally present in chloroplasts in green vegetables. A new dairy product is developed containing both vitamin K1 and K2-vitamins. However, the extent to which the various forms of vitamin K are absorbed from such a mixture is not known. In this study the absorption profile of phylloquinone and menaquinones from this new dairy product containing several K-vitamins is investigated. This study describes a dietary intervention experiment for one single cocktail containing several K-vitamins as part of a dairy product.

Condition Intervention
Healthy Dietary Supplement: vitamin K-rich dairy product

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Absorption of Different Forms of Vitamin K From Dairy Products

Resource links provided by NLM:

Further study details as provided by Maastricht University Medical Center:

Primary Outcome Measures:
  • serum vitamin K levels: phylloquinone, menaquinone-7,-8,-9,and -10 [ Time Frame: one single intake ]

Secondary Outcome Measures:
  • distribution of vitamin K-forms over lipoprotein fractions: triglyceride rich lipoprotein (TGRLP), intermediate-density lipoprotein (IDL), low-density lipoprotein (LDL), high density lipoprotein (HDL) as well as the lipoprotein-free fraction (LPF) [ Time Frame: one single intake ]

Enrollment: 12
Study Start Date: April 2009
Study Completion Date: November 2009
Primary Completion Date: July 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: vitamin K-rich dairy product
one single intake of a dairy product containing several K-vitamins: phylloquinone, menaquinone-7,8,9-and 10.
Dietary Supplement: vitamin K-rich dairy product
several forms of vitamin K: phylloquinone, menaquinone-7,-8,-9,and -10.


Ages Eligible for Study:   20 Years to 45 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy men and women between 20 and 45 years old
  • Subjects of normal body weight and height according to BMI < 30
  • Subjects of Caucasian race
  • Subject has given written consent to take part in the study

Exclusion Criteria:

  • Subjects with (a history of) metabolic or gastrointestinal disease
  • Subjects presenting chronic degenerative and/or inflammatory disease
  • Abuse of drugs and/or alcohol
  • Subjects receiving corticoid treatment
  • Subjects using oral anticoagulants
  Contacts and Locations
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Please refer to this study by its identifier: NCT00931437

VitaK BV / University of Maastricht
Maastricht, Netherlands
Sponsors and Collaborators
Maastricht University Medical Center
Principal Investigator: Cees Vermeer, PhD VitaK / University of Maastricht
  More Information

Responsible Party: Dr. C. Vermeer, VitaK BV Identifier: NCT00931437     History of Changes
Other Study ID Numbers: 08-3-086
Study First Received: June 30, 2009
Last Updated: December 15, 2010

Keywords provided by Maastricht University Medical Center:
vitamin K

Additional relevant MeSH terms:
Vitamin K
Growth Substances
Physiological Effects of Drugs
Antifibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action
Coagulants processed this record on August 18, 2017