The adjuvant treatment of megaloblastic anemia and neuritis is suitable for oral methylcobalamin tablets. 1. Megaloblastic anemia: Methylcobalamin can promote the synthesis of nucleic acid in bone marrow, promote the maturation and division of blood red blood cells and synthesis of hemoglobin, and make the nucleus of megaloblastic red blood cells mature, so as to improve the blood picture of anemia. 2. Auxiliary treatment of neuritis: Methylcobalamin can promote the metabolism of nucleic acids, proteins and lipids through the methyl conversion reaction, and repair the damaged nerve tissues. Methylcobalamin also participates in and promotes the synthesis of phospholipids, which is the main component of myelin sheath, so as to repair the damaged nerve cells. Methylcobalamin can also be directly transferred to nerve cells, stimulate plasma protein synthesis, regenerate the damaged areas of axons and accelerate the recovery of synaptic transmission. The above is the scope of use of methylcobalamin, the specific whether to use also need to professional doctors according to the individual situation.