Collection: Vitamin K

A vitamin found in leafy greens, supporting blood clotting and working with vitamin D to maintain bone health.

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What is Vitamin K?

Vitamin K is a fat-soluble vitamin involved in normal blood clotting and bone health. It occurs in several forms, including vitamin K1, found mainly in green leafy vegetables, and vitamin K2, found in certain fermented foods and animal-derived products. In wellness supplements, it is commonly included in bone-focused formulations and is often paired with vitamin D.

What to look for in Vitamin K products

  • Whether the form is vitamin K1, K2 (MK-4), or K2 (MK-7), as these are used differently in supplements.
  • Vitamin K is often paired with vitamin D3 in products designed to support bone health.
  • Compare amounts in micrograms (µg), as vitamin K products can vary considerably.
  • Be cautious of products that simply list "vitamin K" without specifying the form, as these provide less clarity about what you're getting.

Product Highlights

The ingredients behind the product, and the role they’re intended to play in the body.

What is the difference between vitamin K1 and vitamin K2?
Vitamin K1 (phylloquinone) is the main form found in green vegetables and is the form most closely associated with normal blood clotting. Vitamin K2 refers to a group of compounds called menaquinones, which are commonly used in supplements for bone health and are found in certain fermented and animal-derived foods.
What is the difference between MK-4 and MK-7?
Why is vitamin K often combined with vitamin D?
Why are vitamin K doses measured in micrograms?