Supports Bone Health Synergistic Formula for Bone Metabolism Including Magnesium & Vitamin D Highly Bioavailable Calcium GMP Quality Assured A Dietary Supplement Vegetarian FormulaNOW Calcium Citrate Vcaps is an optimal vegetarian formula designed to support bone structure. Calcium Citrate is a readily digested and absorbed form of Calcium. The trace minerals (as amino acid chelates) and Vitamin D (as Ergocalciferol - a vegetarian source) are added because of their essential role in bone metabolism.