Functions and Mechanisms

1. Calcium regulation
2. May be more powerful than Vitamin E and CoEnzyme Q10 in scavenging free radicals
3. Inhibits both IL-6 and inflammation
4. Excess vitamin A or E interferes with vitamin K absorption
5. Works with boron to increase estrogen production.

Treats

1. [Alzheimer's, blood sugar, clot prevention, osteoporosis, arteriosclerosis...]

Testing:

1. Osteocalcin in blood

Supplementation:

1. It's not stored in the body, so there's no known danger of overdose. However high vitamin K intake can interfere with anticoagulant medication [check this].
2. Forms:
   1. Most active: phytonadione is also known as phylloquinone, or K1. This is the one to take
   2. K2, menaquinones, are produced by bacteria in the intestinal tract.
      • Menaquinone-4 is also known as menatetrenone
   3. K3 (synthetic) menadione, is dangerous.

For more information:

1. Sandy Simmons on vitamin K - like me, this woman has done a lot of research to understand her condition, Connective Tissue Disorder. Her page on vitamin K focuses on deficiency, but has a lot of information and links. No references.