Vitamin K Foods: Complete List with Amounts

A complete list of vitamin K foods ranked by mcg per serving — covering K1 and K2 sources, daily requirements, and the fat-absorption trick few people know.

Frequently Asked Questions

What foods are highest in vitamin K?
The highest sources of vitamin K1 are dark leafy greens: collard greens (530 mcg per 1/2 cup, cooked), turnip greens (426 mcg), spinach (145 mcg per cup raw), and kale (113 mcg per cup raw). For vitamin K2, natto (fermented soybeans) is by far the richest source at 850+ mcg per 3-oz serving.
How much vitamin K do I need per day?
The Adequate Intake (AI) for vitamin K is 120 mcg per day for men and 90 mcg per day for women aged 19 and older. This is expressed as a Daily Value (DV) of 120 mcg on nutrition labels. Most adults eating a diet that includes leafy green vegetables easily meet this target.
What is the difference between vitamin K1 and vitamin K2?
Vitamin K1 (phylloquinone) is found in plant foods — primarily green leafy vegetables and plant oils — and is used mainly by the liver for blood clotting. Vitamin K2 (menaquinones) comes from fermented foods and animal products, has a longer half-life in the body, and is redistributed to bones and arteries, where it may offer additional benefits for bone density and vascular health.
Should I avoid vitamin K foods if I take warfarin?
You do not need to avoid vitamin K foods on warfarin — but consistency is critical. Warfarin works by blocking vitamin K's role in clotting. Sudden large changes in vitamin K intake shift your INR and raise your bleeding or clotting risk. Aim to eat roughly the same amount of vitamin K-rich foods each week, and discuss any significant dietary changes with your prescribing clinician.
Does cooking destroy vitamin K?
Cooking does not meaningfully destroy vitamin K — it is one of the more heat-stable vitamins. However, cooking increases the concentration of vitamin K per cup (by reducing volume) without meaningfully improving how much you absorb. What does improve absorption is pairing vitamin K foods with dietary fat, since K is a fat-soluble vitamin.
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