Thorne Vitamin D + K2 liquid drops combine vitamin D3 and vitamin K2 (MK-4) to support bone, heart and immune health. Each 2-drop serving provides 1,000 IU (25 mcg) D3 and 200 mcg K2 in MCT oil, with 600 servings per bottle. Unflavored; add to food or drinks. NSF Contents Certified; gluten-, dairy- and soy-free.