Viridian Bone Complex Vegetable Capsules contain calcium and magnesium (in a 1:1 Ratio) as well as Boron, Vitamin C, Vitamin D and Vitamin K Vitamin C contributes to normal collagen formation for the normal function of bones, cartilage, skin and teeth. Calcium and magnesium are needed for the normal maintenance of bones and teeth. Vitamin D contributes to normal blood calcium levels and to the normal absorption / utilization of calcium. Vitamin D also helps maintain normal bones, teeth and muscle function. Vitamin K contributes to the maintenance of normal bones. The vitamin C in this formula is buffered to be gentle on the stomach. The calcium and magnesium are chelated as citrates. Additional boron and malic acid. Vitamin D in this formula is vegan. Directions: As a food supplement, take four capsules daily with food, or as directed by your healthcare practitioner. INGREDIENTS: four vegetarian capsules provide: Calcium (citrate) 260mg Magnesium (citrate) 260mg Vitamin C (ascorbic acid) 60mg Vitamin K 50ug Malic Acid 40mg Boron (sodium borate) 1200ug Vitamin D3 (cholecalciferol) 10ug