Zinc is an essential mineral that is involved in many aspects of cellular metabolism.* Zinc is a key cofactor in hundreds of enzymatic reactions, and plays a critical role in protein synthesis, the maintenance of cellular structures, and cell signaling.* Because of these varied functions, zinc is necessary for the maintenance of skeletal, neurological, reproductive, and immune system health.* Although dietary bioavailability of zinc is relatively poor, zinc glycinate has been shown to achieve superior absorption and bioavailability.