Vitamin D3 & K2 is a balanced combination of two essential nutrients to support bone health, heart health and the immune system*.Featuring 1000IU of vegan vitamin D3. This advanced form of vitamin D is plant sourced from lichen and has been clinically trialled at the University of Surrey. The non-animal tested K2 is naturally derived from fermented natto cultures.Vitamin K2 works synergistically with D3 and these two essential nutrients are in forms which are optimally absorbed by the body. IngredientsVitamin K2 (Vita MK-7) Vitamin D3 (1000iu) In a base of alfalfa.