The Controversy Surrounding Vitamin K Administration to Newborns.

Claims that vitamin K does not exist or is not a real vitamin have been circulating online, despite its well-established role in blood clotting and the fact that it is routinely given to newborns to prevent Vitamin K Deficiency Bleeding. Vitamin K is a fat-soluble vitamin found in leafy greens and animal products, and its existence is not in question. The claims appear to stem from a misunderstanding of the chemical symbol for potassium, which is also "K."