Vitamin K1 vs K2 MK-4 and MK-7: Label Comparison

Compare vitamin K by K1 or K2 form, MK-4 or MK-7 subtype, micrograms per serving, and overlap with D3 or calcium blends.

This page is for general reference only and is not medical advice, diagnosis, treatment, or prescription. Research and regulatory status can change, so ask a qualified professional when medical judgment is needed.

2026 search trend

A front label saying vitamin K2 does not distinguish MK-4 from MK-7. Read the ingredient form and micrograms per serving.

What to compare on product labels

• Identify K1 (phylloquinone) versus K2 (menaquinone).
• For K2, check MK-4 versus MK-7 and the actual micrograms per serving.
• Add vitamin K from D3, calcium, and multivitamin blends.

Other names and search terms

Ingredients often compared together

Cautions

• If you take warfarin or another vitamin K antagonist, do not change vitamin K intake without clinical guidance.
• Differences among K forms do not by themselves prove treatment benefit for a medical condition.

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