is vitamin k water soluble
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). This difference between the two groups is very important. It determines how each vitamin acts within the body.The fat soluble vitamins are soluble in lipids (fats). Specifically Vitamin E -- Vitamin E is a fat soluble vitamin. 2  Although it can be water solubilized in the lab to help its absorption through the intestinal wall, once it is absorbed into the body it would appear to behave as a fat soluble vitamin does.