Vitamin K – Uses, Benefits, Sources and Dosage It is a fat soluble vitamin. It plays an important role in blood clotting. It has also important role in protection of heart and keeps the bones strong. Sometimes it is referred as “the forgotten vitamin” because major benefits are overlooked. Typically it is not a dietary supplement, actually it is a group of compounds. Types of Vitamin K There are three types of vitamin K which are given below: 1. Vitamin