Nature's Bounty Vitamin K2 + D3! Feel confident in your health journey knowing you’re getting the power of both D3 and K2 Vitamins. (1) Vitamin D3 is an essential nutrient that supports bone, teeth, muscle, and immune health. (1) While Vitamin K2 supports the function of D3 by activating calcium absorption for strong bones. (1) Best of all, you’ll feel more vibrant each day thanks to Vitamin D3 giving your body year-round immune support! (1) This supplement contains the same form of vitamin D produced in the body from direct sunlight exposure. (1) You won't find any artificial flavors in this supplement either, plus they are gluten-free and free of synthetic dyes.