Best Vitamin K for Heart
Top 10 products ranked
Last reviewed May 2026
Clinical dose: 90–200 mcg
Why Vitamin K for Heart
Vitamin K plays a supporting role in heart. K1 (phylloquinone) primarily supports blood clotting, while K2 (menaquinones) directs calcium into bones and teeth rather than arteries. Among K2 forms, MK-7 has a much longer half-life (~96 hours vs 1–8 hours for MK-4), making it far more effective for bone density and cardiovascular health at lower doses.
What dose to look for
Clinical studies typically use 90–200 mcg of vitamin k. MK-7 supplements typically provide 100–200 mcg. Products below this range may not deliver meaningful results.
What the research says
Vitamin K has strong clinical evidence for heart benefits. MK-7 form confirmed in multiple trials for bone density; K1 essential for blood clotting via coagulation cascade Learn more
Caruso's Natural Health
Vitamin K2 90mcg
menaquinone-7 · 180 mcg
Sports Research
D3 125 mcg + K2 100 mcg
menaquinone-7 · 100 mcg
Promise
Vitamin K2 MK-7, 120 Veggie Caps
menaquinone-7 · 100 mcg
Nutricost
Vitamin K2 MK-7 100 mcg
menaquinone-7 · 100 mcg
Naka Platinum
Bioactive Multi for Women, 120 Veggie Caps
100 mcg
NOW
Mega D-3 5000 IU & MK-7 180 mcg
menaq7 · 180 mcg
Thorne
Vitamin D + K2
menatetrenone · 200 mcg
California Gold Nutrition
Vitamin D3 + K2 as MK-7
menaquinone-7 · 120 mcg
Sports Research
D3 + K2, Plant-Based, 125 mcg/100 mcg, 160 Veggie Softgels
menaquinone-7 · 100 mcg
SR SportsResearch
D3 125 mcg + K2 100 mcg
menaquinone-7 · 100 mcg