Iron in the body can be divided into functional iron and stored iron. Functional iron exists in hemoglobin, myoglobin and iron containing enzymes. Stored iron exists in liver, reticuloendothelial cells and bone marrow in the form of ferritin and hemosiderin.

Iron forms hemoglobin and myoglobin and participates in the transport of oxygen. It forms cytochrome and iron containing enzymes, participates in energy metabolism, stimulates the synthesis of hemoglobin and myoglobin, and participates in the transport and exchange of oxygen and carbon dioxide in the body. Enhance human energy metabolism. promote β- Carotene is converted to vitamin A. Promote the production of antibodies. Enhance the decomposition of drugs in the liver.

Folic acid can maintain the normal process of cell division. Prevent the occurrence of giant cell anemia. Prevent fetal neural tube malformation. Prevent the occurrence of some cardiovascular and cerebrovascular diseases. It helps to stabilize the mental state.Pregnant women should supplement folic acid during pregnancy, otherwise it may lead to fetal neurovascular malformation. Folic acid can also prevent anemia. Folic acid participates in the synthesis of hemoglobin in the form of coenzyme in human body, so as to promote the production of normal red blood cells and prevent megaloblastic anemia.