What it does: Vitamin K activates proteins needed for normal blood clotting and helps direct calcium into bones and out of soft tissues, supporting cardiovascular and bone health.
How it is used: It is commonly taken to help maintain normal clotting, support bone mineral density, and, in some cases, promote healthy arteries.
Natural sources and supplement forms: Main dietary sources are green leafy vegetables (for K1), fermented foods, and certain animal products (for K2). Supplements provide vitamin K as phylloquinone (K1), MK-4, or MK-7 forms of K2.
Why it appears in supplement formulas: Brands use vitamin K to help users meet needs for blood health and bone strength, particularly in those with low vegetable intake, aging concerns, or at risk for vitamin K deficiency.
What to know before use: Consult your healthcare provider before combining vitamin K supplements with blood-thinning medications, as it can affect their action.
Interesting Fact
Vitamin K: Leafy Greens Are Its Secret Source
Vitamin K is naturally abundant in leafy green vegetables like spinach, kale, and broccoli. This essential nutrient plays a unique role in the body by helping activate proteins that support normal blood clotting and bone health. Because it works behind the scenes, you may not notice its effects, but it's one reason why greens are often recommended as part of a balanced diet.
