Thorne Vitamin K combines three clinically studied forms of vitamin K to support bone and heart health. This gluten-, dairy- and soy-free formula works with vitamin D and magnesium to promote bone strength and proper calcium usage. Third-party tested for purity and potency. Trusted by champions and healthcare professionals.

• Comprehensive Formula: Provides 3 clinically studied types of vitamin K for optimal health – vitamin K1, vitamin K2 as MK-4, and vitamin K2 as MK-7
• Bone Health: Pairs with vitamin D to contribute to bone strength and density, and with magnesium to direct calcium to the bones and away from soft tissues like blood vessels*
• Heart Health: Helps to maintain the health and elasticity of the arteries and supports the normal ability of the blood to clot*
• Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
• Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)