Supplement reference
Vitamin K2 (MK-7)
A source-linked reference on Vitamin K2 (MK-7), evidence, safety and product identity. Sources checked 6 September 2026.
Source and review status
Published sources checked
Sources checked on: 6 September 2026
Qualified clinical review: Pending. This page has not been clinically reviewed.
About this source check
AI-assisted editorial source checking covers the cited material and its stated limits. It is not a systematic review, verification of a supplied product, or clinical sign-off.
Editorial role: InfoAddict. Last material change: 6 September 2026. Next source review: 6 March 2027.
Ingredient and preparation
MK-7 is a menaquinone form of vitamin K2. It is distinct from vitamin K1 and other menaquinones.
Sources: National Institutes of Health, Office of Dietary Supplements
Evidence and limits
NIH describes vitamin K functions and its interaction with warfarin. The selected source does not establish MK-7 as superior for bone or cardiovascular outcomes.
Sources: National Institutes of Health, Office of Dietary Supplements
Safety and a useful record
People taking warfarin need stable vitamin K intake and individual clinical guidance. Do not start or change a K2 product from a marketing claim.
Sources: National Institutes of Health, Office of Dietary Supplements, National Center for Complementary and Integrative Health
Record form, amount, diet changes and all anticoagulant medicines.
Sources: National Center for Complementary and Integrative Health
Published sources
- Vitamin K: Fact Sheet for Consumers
National Institutes of Health, Office of Dietary Supplements. Current NIH ODS reference; accessed 6 September 2026.
Supports: Vitamin K functions and medication-interaction context. It does not establish MK-7-specific outcomes.
- Safe Use of Complementary Health Products and Practices
National Center for Complementary and Integrative Health. Current NCCIH reference; accessed 6 September 2026.
Supports: General safety, interaction and contamination context. It does not establish ingredient-specific benefit.
Change history
| Date | Change | Clinical-review status |
|---|---|---|
| 6 September 2026 | Source-linked reference published | Pending |
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