Natural and artificial flavor. Targeted, specialized nutrition. Caltrius. To help build strong bones. 50% daily value vitamin D. 50% daily value calcium. 10 g protein. No. 1 doctor recommended brand. Targeted nutrition to help build strong bones. You need more calcium and vitamin D as you age because you naturally lose bone density. Ensure Bone Health has Caltrius, a triple that provides 50% of your daily value of calcium, vitamin D and 10 g of protein to help build strong bones. Gluten-free; suitable for lactose intolerance.