Phytonadione

**Semantic type:** Vitamin

**Definition:** An analogue of the naphthoquinone vitamin K found in plants. The vitamins K are essential for blood coagulation as it is necessary for the hepatic synthesis of the coagulation factors II, VII, IX, and X; deficiency results in a bleeding diathesis. These vitamins are lipo-soluble; absorption via intestinal lymphatics requires the presence of bile salts. (NCI04)

**Synonyms:** - AquaMephyton - Konakion - PHYTONADIONE - Phylloquinone - Phylloquinone - Vitamin K - Vitamin K1