A Dietary Supplement with Vitamins A, D3, and K2 (as MK-7)VegetarianGluten FreeSoy FreeMade with Non GMO Ingredients Liposomal ADK contains the vitamin heavy-hitters that work in combination to build healthier, stronger, more resilient bones throughout life. Vitamin A supports growth and repair of bones. Vitamin D regulates absorption of calcium in the gut. Vitamin K2 activates a critical protein, osteocalcin, which incorporates calcium into bones. With these vitamins on your side, you’ll have strong, dense, durable bones that will last a lifetime.