WITH TRACE MINERALS AND VITAMIN D: In addition to calcium and magnesium, Cal-Mag Caps provide chelated, highly absorbable forms of zinc, copper, and manganese, three trace minerals known to support healthy bone metabolism.* Vitamin D has also been included to support calcium metabolism.* SUPPORTS BONE HEALTH*: Cal-Mag Caps contain the minerals that are essential for bone health.* CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Soy Free GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). Packaged in the USA by a family owned and operated company since 1968. During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.