Vitamin K / K2: What It Is, Forms, Cautions, and Clean Brands

Vitamin K is vitamin K, including K2 forms like MK-7. It supports bone health and helps direct calcium where it belongs.*

Forms and what to look for on the label

MK-7 lasts longer in the body than MK-4. It’s often paired with D3.

Before you take it

Talk to your doctor before taking it if you take warfarin, since it directly affects how that drug works.

What independent doctors say

Dr. Peter McCullough pairs K2 with vitamin D in a Dec 24, 2024 post on The Focal Points:

“In clinical practice I recommend 10,000 IU of vitamin D with 100-200 mcg of vitamin K2” (The Focal Points, Dec 24, 2024)