Blood tonic mainly consists of ferrous sulfate, folic acid, vitamin B₁₂, erythropoietin and so on, but it is more important to carry out etiological treatment. 1. Ferrous sulfate: belongs to iron, and ferrous fumarate, ferric ammonium citrate, etc. It is used for the prevention and treatment of iron-deficiency anemia, and is especially suitable for anemia caused by pregnancy, malnutrition, hemorrhoidal bleeding, and so on. 2. Folic acid, vitamin B₁₂: can treat patients with megaloblastic anemia. 3. Erythropoietin: belongs to the hematopoietic cell growth factor class of drugs. This product is suitable for renal anemia, such as anemia of renal failure hemodialysis, anemia caused by chemotherapy, malignant tumors or AIDS drug treatment. Adverse reactions include elevated blood pressure and joint pain. 4. Treatment of etiology: If the anemia is caused by acute leukemia and other factors, it is necessary to carry out the treatment of the original disease in order to raise the hemoglobin index, and the drugs include cytarabine and so on. Anemia patients need to go to the hospital in time to check, to identify the causes of anemia, under the guidance of the doctor to choose the appropriate drug treatment.