Vitamin K

vitamin K

Alternative Names

Vitamin K is a fat-soluble vitamin which exists naturally in two forms:

  • Vitamin K1 (Phylloquinone) found in plants and vegetables such as: spinach, broccoli, cabbage, lettuce and collard greens and other foods such as milk, potatoes, oats, tomatoes and in most fruits. 
  • Vitamin K2 (Menaquinone - MK) which is synthesised by bacteria within the intestinal tract

Vitamin K accumulates in the liver, spleen and lungs but the body does not store significant amounts for long periods of time.


Vitamin K plays an important role in the maintenance of normal bone health and normal blood clotting.