Bio-equivalence Study

NCT ID: NCT01638143

Last Updated: 2012-07-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

24 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-11-30

Study Completion Date

2011-08-31

Brief Summary

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The primary objective of this study is to compare absorption of vitamin K2 (menaquinone-7) after intake of three different vitamin K2 supplements.

Detailed Description

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Several manufacturers are producing vitamin K2 raw material in different forms, namely oil and powder. To ensure bioequivalence of different vitamin K2 sources, the investigators are interested to compare the bioavailability of three different vitamin K2 formulations that are already commercially available. Two different oils and one powder product will be compared in this randomized cross-over trial. The investigators hypothesize that different vitamin K2 sources give no differences in bioavailability of vitamin K2.

Conditions

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Bioequivalence Bioavailability

Keywords

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vitamin K2 menaquinone-7 bioavailability

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Gnosis P-1000 capsules

MK-7 capsules containing 75 µg of MK-7 (source: Gnosis, Italy).

Group Type ACTIVE_COMPARATOR

Gnosis P-1000 capsules

Intervention Type DIETARY_SUPPLEMENT

The study participants will receive three different types of capsules as a single dose (75 μg of MK-7/day):

* MenaQ7 M-1500 capsule
* Gnosis P-1000 capsule
* Gnosis M-1500 capsule Every two weeks, participants switch to another type of capsule; the washout period will therefore be two weeks.

Gnosis M1500 capsules

MK-7 capsules containing 75 µg of MK-7 (source Gnosis, Italy).

Group Type ACTIVE_COMPARATOR

Gnosis M-1500 capsules

Intervention Type DIETARY_SUPPLEMENT

The study participants will receive three different types of capsules as a single dose (75 μg of MK-7/day):

* MenaQ7 M-1500 capsule
* Gnosis P-1000 capsule
* Gnosis M-1500 capsule

Every two weeks, participants switch to another type of capsule; the washout period will therefore be two weeks.

MenaQ7 M-1500 capsules

MK-7 capsules containing 75 µg of MK-7 (source: Nattopharma, Norway)

Group Type ACTIVE_COMPARATOR

MenaQ7 M-1500 capsules

Intervention Type DIETARY_SUPPLEMENT

The study participants will receive three different types of capsules as a single dose (75 μg of MK-7/day):

* MenaQ7 M-1500 capsule
* Gnosis P-1000 capsule
* Gnosis M-1500 capsule

Every two weeks, participants switch to another type of capsule; the washout period will therefore be two weeks.

Gnosis P-1000 capsules

Intervention Type DIETARY_SUPPLEMENT

The study participants will receive three different types of capsules as a single dose (75 μg of MK-7/day):

* MenaQ7 M-1500 capsule
* Gnosis P-1000 capsule
* Gnosis M-1500 capsule Every two weeks, participants switch to another type of capsule; the washout period will therefore be two weeks.

Interventions

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MenaQ7 M-1500 capsules

The study participants will receive three different types of capsules as a single dose (75 μg of MK-7/day):

* MenaQ7 M-1500 capsule
* Gnosis P-1000 capsule
* Gnosis M-1500 capsule

Every two weeks, participants switch to another type of capsule; the washout period will therefore be two weeks.

Intervention Type DIETARY_SUPPLEMENT

Gnosis P-1000 capsules

The study participants will receive three different types of capsules as a single dose (75 μg of MK-7/day):

* MenaQ7 M-1500 capsule
* Gnosis P-1000 capsule
* Gnosis M-1500 capsule Every two weeks, participants switch to another type of capsule; the washout period will therefore be two weeks.

Intervention Type DIETARY_SUPPLEMENT

Gnosis M-1500 capsules

The study participants will receive three different types of capsules as a single dose (75 μg of MK-7/day):

* MenaQ7 M-1500 capsule
* Gnosis P-1000 capsule
* Gnosis M-1500 capsule

Every two weeks, participants switch to another type of capsule; the washout period will therefore be two weeks.

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Healthy men and women, aged between 20 and 40 years
* Normal body weight and height (18.5 kg/m2 \< BMI \< 30 kg/m2)
* Stable body weight (weight gain or loss \< 3 kg in past 3 mo)
* Written consent to take part in the study
* Agreement to adhere to dietary restrictions required by the protocol

Exclusion Criteria

* Abuse of drugs and/or alcohol
* Use of vitamin supplements containing vitamin K
* Soy allergy
* Pregnancy
* a history of) metabolic or gastrointestinal diseases including hepatic disorders
* Chronic degenerative and/or inflammatory diseases, e.g. diabetes mellitus, renal failure
* Use of oral anticoagulants
* Corticoid treatment
* Subjects with anaemia or subjects who recently donated blood or plasma
* Systemic treatment or topical treatment likely to interfere with coagulation metabolism (salicylates, antibiotics)
Minimum Eligible Age

20 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Maastricht University Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Cees Vermeer, PhD

Role: PRINCIPAL_INVESTIGATOR

VitaK BV Maastricht University

Locations

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VitaK BV / Maastricht University Medical Center

Maastricht, , Netherlands

Site Status

Countries

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Netherlands

Other Identifiers

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10-3-017

Identifier Type: -

Identifier Source: org_study_id