Ferrous glycinate, with CAS number 20150-34-9, is a chelate complex formed from ferrous iron (Fe²⁺) and glycine. It is a fine, reddish-brown to brown powder that is soluble in water. This compound is recognized for its high bioavailability and stability compared to other inorganic iron sources like ferrous sulfate. Its primary application is as a highly effective iron supplement in animal nutrition and human food fortification. In animal feed, particularly for swine, poultry, and aquaculture, it is used to prevent and treat iron-deficiency anemia, promoting growth, health, and productivity. For human consumption, it is utilized as a food additive to fortify staple foods, beverages, and dietary supplements, providing a bioavailable iron source with minimal gastrointestinal side effects and good taste-masking properties. Due to its chelated structure, ferrous glycinate is less prone to oxidation and has reduced interactions with other dietary components that inhibit iron absorption, such as phytates. It is generally considered safe for use, with established guidelines for its application in feed and food products by regulatory bodies.