BioStacksBest Vitamin K for Pregnancy
Top 3 products ranked
Clinical dose: 90–200 mcg
Why Vitamin K for Pregnancy
When it comes to pregnancy, Vitamin K is one of the most supporting nutrients to consider. 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. MK-7 is the preferred supplemental form for long-term calcium metabolism support.
What dose to look for
Clinical studies typically use 90–200 mcg of vitamin k. MK-7 supplements typically provide 100–200 mcg. Supplements that fall short of this threshold are unlikely to match what clinical trials achieved.
The evidence behind vitamin k
Research supporting vitamin k for pregnancy is rated as strong. MK-7 form confirmed in multiple trials for bone density; K1 essential for blood clotting via coagulation cascade Learn more
