NATURE'S BOUNTY presents B-CALCIUM MAGNESIUM & ZINC. The formulation by Solgar® combines calcium, magnesium, and zinc to support the health of your skeletal and muscular systems. Each serving, consisting of three tablets, delivers 1000 mg of calcium, 400 mg of magnesium, and 15 mg of zinc. This blend is specifically designed to help adults maintain healthy bones and muscles throughout their lives.