Vitamin K

Vitamins

Vitamin K

Vitamin K is an essential nutrient that supports healthy blood clotting and helps maintain strong bones by regulating calcium. It may also contribute to cardiovascular health by helping prevent calcium buildup in arteries.

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Key Facts

Vitamin K is a fat-soluble nutrient that activates proteins involved in blood clotting and bone mineralization
This formula combines K1, MK-4, and MK-7 — three forms that work in different tissues throughout your body
MK-4 concentrates in bone and vascular tissue, while MK-7 has a longer half-life, supporting sustained activity

Ingredients

Vitamin K (6,090 mcg total), vitamin K1 (1 mg), vitamin K2 as MK-4 (5 mg), vitamin K2 as MK-7 (90 mcg), hypromellose capsule, microcrystalline cellulose, mixed tocopherols, silicon dioxide.

Why We Chose This

Most vitamin K supplements emphasize one form, but bone and vascular health benefit from multiple forms working in concert. This formula's higher MK-4 content addresses a real gap — MK-4 accumulates preferentially in bone tissue and supports the carboxylation of osteocalcin, a protein central to bone mineralization. The addition of MK-7 extends the nutrient's activity window throughout the day. Together, these forms support the activation of matrix Gla protein in arterial walls, which helps maintain vascular elasticity. The combination reflects current research on how different K2 subtypes distribute across tissues.

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Frequently Asked Questions About Vitamin K

What is the supporting research for the benefits of vitamin K?

Vitamin K1 and K2 appear to have important functions in bone and vascular health. (NIH review)
Adequate vitamin K intake is associated with reduced cardiovascular disease risk. (human health review)
Vitamin K-dependent pathways appear to contribute to healthy aging. (aging and vitamin K review)

How do I take vitamin K?

Take 1-2 capsules daily with a fat-containing meal to enhance absorption.

Can I take vitamin K with other supplements or medications?

Vitamin K can interact with blood thinners like warfarin, so consistent intake matters. Antibiotics, bile acid sequestrants, and orlistat may also affect vitamin K absorption or effectiveness.

Talk with your healthcare provider before combining vitamin K supplements with medications you take regularly.

Who might benefit from taking vitamin K?

People concerned with bone strength and cardiovascular health may find vitamin K beneficial, as it supports bone mineral density and helps prevent calcium buildup in arteries. Those with certain conditions like malabsorption disorders or individuals on blood-thinning medications should consult their healthcare provider about supplementation.

How long does it typically take to notice effects of vitamin K?

As a fat-soluble vitamin, vitamin K takes time to build up in your system—typically 3 months of consistent use to notice meaningful effects on bone density and vascular health. If you're deficient, you may see improvements in blood clotting within 24 to 48 hours, though broader benefits require patience and consistency.

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