The chemical compound ferric citrate is made of citrate, which comes from citric acid, and ferric iron (Fe3+). It is used as a medicine and nutritional supplement. Iron is frequently obtained via this substance in dietary supplements. The delivery of oxygen, the creation of energy, and DNA synthesis are just a few of the numerous biological activities that depend on iron, an essential mineral. A bioavailable form of iron that is simple for the body to absorb is provided by ferric citrate. It is also used to treat chronic kidney disease (CKD) by acting as a phosphate binder.