Zinc Glycinate, also known as zinc bisglycinate, is a mineral amino acid chelate formed through the reaction of zinc with glycine. The chelation protects zinc from interactions with dietary inhibitors such as phytates, resulting in superior absorption in the small intestine. Studies demonstrate significantly higher bioavailability than zinc gluconate, oxide, and sulfate, often allowing lower dosages. The gentle chelated form minimizes nausea and stomach irritation. It typically provides 20-30% elemental zinc by weight.