AG Vitamin D3+K2 is a Foundational Nutrition supplement that complements AG1 with a single drop formula of active vitamin D3 and K2. These two essential nutrients work together to support the cardiovascular system, help maintain bone density and support normal functioning of the immune system.* Our AG Vitamin D3+K2 drops are available in an easy to use dropper, giving you the flexibility to personalize your serving each day. Take 1-4 drops daily or as directed by your healthcare provider.