Vitamin K Supplements
Vitamin K is a fat-soluble vitamin that plays an essential role in blood clotting, bone metabolism, and cardiovascular health. It exists in two primary forms — Vitamin K1 (phylloquinone) and Vitamin K2 (menaquinone) — each with distinct functions and food sources. While K1 is abundant in leafy green vegetables, K2 is found primarily in fermented foods and certain animal products, making supplementation a practical option for many people.
At Best Vitamins Online, we carry Vitamin K supplements from professional-grade brands including NOW Foods, Thorne, Pure Encapsulations, Bluebonnet Nutrition, and Douglas Laboratories. Whether you're looking for standalone K2 MK-7, K1, or a combination D3+K2 formula, you'll find the right option here.
Vitamin K Forms
- Vitamin K1 (Phylloquinone) — The primary dietary form; plays a key role in normal blood clotting
- Vitamin K2 MK-4 (Menatetrenone) — A short-chain menaquinone found in animal products; used in research on bone metabolism
- Vitamin K2 MK-7 (Menaquinone-7) — A long-chain form derived from natto (fermented soy); has a longer half-life in the body and is the most commonly supplemented K2 form
- Vitamin D3 + K2 Combinations — Pair D3 with MK-7 to support calcium utilization; a popular combination recommended by many practitioners
Top Vitamin K Brands
- NOW Foods — Vitamin K2 MK-7, K1, and D3+K2 combination formulas
- Thorne — Professional-grade K2 and D3/K2 formulas in bioavailable forms
- Pure Encapsulations — Hypoallergenic K1 and K2 MK-7 options
- Bluebonnet Nutrition — Non-GMO Vitamin K2 MK-7 and combination formulas
- Douglas Laboratories — Practitioner-trusted K2 and D3+K2 supplements
Related Categories
- Vitamin D Supplements — Vitamin D3 and K2 are frequently paired together
- Calcium Supplements — Vitamin K2 helps direct calcium to bones rather than soft tissues
- Magnesium Supplements — Works alongside Vitamin D and K2 in bone metabolism
- Multivitamin Supplements — Many multivitamins include Vitamin K1 and/or K2
Frequently Asked Questions
What is the difference between Vitamin K1 and K2?
Vitamin K1 is primarily involved in blood clotting and is found abundantly in leafy greens. Vitamin K2 plays a more prominent role in directing calcium to bones and away from arteries. K2 MK-7 has a significantly longer half-life than K1, allowing for once-daily dosing at lower amounts.
Why is Vitamin K2 often combined with Vitamin D3?
Vitamin D3 increases calcium absorption from the gut. Vitamin K2 (MK-7) activates proteins that help direct that calcium into bones and teeth rather than depositing in soft tissues. Many practitioners recommend taking them together, particularly at higher Vitamin D doses.
Is Vitamin K2 MK-7 derived from soy?
Most MK-7 supplements are derived from natto, a fermented soybean product. However, many manufacturers use a purification process that removes soy proteins, making the final product suitable for those with soy sensitivities. Check individual product labels if soy is a concern.
Can I take Vitamin K if I am on blood thinners?
Individuals taking anticoagulant medications such as warfarin should consult their healthcare provider before supplementing with Vitamin K, as it can interact with these medications. This is a medical decision that requires professional guidance.
Visit us at bestvitaminsonline.com