Ferrous gluconate dihydrate is widely used as a dietary supplement to treat or prevent iron deficiency anemia. It provides a bioavailable form of iron that is gentle on the stomach, making it suitable for individuals who experience gastrointestinal discomfort with other iron supplements. It is often included in multivitamins and iron-fortified foods to support healthy red blood cell production and improve overall energy levels. In the food industry, it serves as a color stabilizer and nutrient additive, particularly in black olives, to maintain their dark color and enhance nutritional value. Additionally, it is used in pharmaceuticals to formulate iron supplements in various forms, such as tablets, capsules, and liquid solutions, catering to different patient needs. Its effectiveness and tolerability make it a preferred choice for addressing iron deficiencies in both adults and children.