About Vitamin K
Official resources
Fact sheets from the NIH Office of Dietary Supplements related to this ingredient group.
Dietary Supplement Label Database
Ingredient group data in NutriNav is aligned with the NIH Dietary Supplement Label Database (DSLD).
- DSLD group id
- 2515
At a glance
Approval status
supplement
Compare All Forms
12 formsCompare supplement forms of Vitamin K by absorption quality and what your body actually gets from each:
| Form | Absorption | Steps to absorb | Notes | Action |
|---|---|---|---|---|
MK-4
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MK-4 (Menaquinone-4)
A form of Vitamin K2 important for bone and cardiovascular h...
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— | — | — | View → |
Vitamin K (menadione)
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Vitamin K (menaquinone)
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— | — | — | View → |
Vitamin K (Mixed)
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— | — | — | View → |
Vitamin K (Phylloquinone)
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— | — | — | View → |
Vitamin K (unspecified)
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— | — | — | View → |
Vitamin K mixed)
|
— | — | — | View → |
| Vitamin K1 | — | — | — | View → |
Vitamin K1 (Phylloquinone)
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— | — | — | View → |
| Vitamin K2 | — | — | — | View → |
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Vitamin K2 (MK-7)
Supports bone strength and cardiovascular health by directin...
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— | — | — | View → |
Also appears on labels as
Additional names seen on supplement labels for forms of this ingredient (beyond the main aliases above).
2-Methyl-3-farnesylgeranyl-1,4-naphthoquinone, 7 mcg vitamin k2, 65 mcg vitamin k1, all-trans-MK-7, cultured phytonadione, from 45 mcg of menaq7(r), from 45 mcg of menaq7(tm), k-1, k-2, k1, k1 and k2 blend, k2, k2 m7 menaq7(r), k2 menaquinone-7, k2-m7 menaq7(r), k complex, menadione, menadione phylloquinone, menaq7, menaq7 crystals, menaq7 full spectrum, menaq7 menaquinine, menaq7 menaquinone, mena q7 menaquinone-7, menaquinone-4, menaquinone-4 and menaquinone-7, menaquinone-7, menaquinone-7 menaq7, menaquinone 7, menaquinone mk4, menaquinone mk7, Menatetrenone, mixed menaquinones, mk-6, mk-7 menaquinone, mk-7 vitamin k2, mk-9, natural menaquinone-7, natural mk-7, natural vitamin k-2, natural vitamin k2, phylloquinone, phytomenadione, phytonadione, trans-menaquinone-7, vit. k1, vit. k2, Vitamin K (menadione), Vitamin K (menaquinone), Vitamin K (Mixed), Vitamin K (Phylloquinone), vitamin k-1, vitamin k-2, vitamin k1 and k2, vitamin k1 phytonadione, vitamin k1/k2, Vitamin K2 (MK-4), vitamin k2 menaquinone-7, vitamin k2 mk-7, vitamin k2-7, vitamin k blend, vitamin k complex, vitamk7 menaquinone-7, vitamk7(tm) menaquinone-7, vk2
Type: Vitamins
Organic compounds essential for normal growth and nutrition. Required in small quantities in the diet because they cannot be synthesized by the body.
Absorption: Fat-soluble vitamins require dietary fat for absorption. Water-soluble vitamins are generally well-absorbed but excess amounts are excreted.
Interactions: Some vitamins can interfere with medications. Fat-soluble vitamins can accumulate in the body.
Watch out for
Possible interactions or cautions — talk to a healthcare provider if unsure.
- May interact with anticoagulant medications such as warfarin.
Potential Benefits
Benefits associated with Vitamin K forms:
And 3 more benefits...
Potential Side Effects
Side effects associated with Vitamin K forms:
And 2 more side effects...