Supplement monograph

Vitamin K2

A fat-soluble vitamin where anticoagulant context, MK-7 versus MK-4 form choice, and dose consistency are the practical questions.

Practical read

Pair with a consistent meal when adherence matters. If using warfarin or another anticoagulant plan, do not change vitamin K intake without the prescribing clinician.

Decision frame

Vitamin K2: what to check before it earns a slot

Timing rule

Pair with a consistent meal when adherence matters. If using warfarin or another anticoagulant plan, do not change vitamin K intake without the prescribing clinician.

Form lens

MK-7: longer half-life positioningMK-4: different dosing historyK1: common leafy-green and multivitamin form

Safety lens

Warfarin plans depend on consistent vitamin K intakeDo not chase bone or heart claims without contextMultis can quietly add vitamin K

Best fit

  • Fat-soluble stack review
  • MK-7 vs MK-4 comparison
  • Anticoagulant-context safety checks

Form notes

  • MK-7: longer half-life positioning
  • MK-4: different dosing history
  • K1: common leafy-green and multivitamin form

Watchouts

  • Warfarin plans depend on consistent vitamin K intake
  • Do not chase bone or heart claims without context
  • Multis can quietly add vitamin K

Sources and next checks

NIH ODS vitamin K fact sheetNIH MedlinePlus warfarin and diet guidance
Vitamin K and anticoagulant contextSupplement label auditSafety alert topic hub

Evidence Brief

Get supplement timing and safety notes as they ship.

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These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease. Generated by AI. Always verify with a healthcare professional. Educational information only. Not a substitute for professional medical advice.