Methylcobalamin is a nourishing peripheral nerve, mainly an oral preparation of B12, which has a restorative effect on damaged nerves, can improve the tissue metabolism of nerves, and can also promote the maturation of red blood cells, as well as division, increase the production of red blood cells, and can also be used for the treatment of improving anemia. Methylcobalamin is mainly suitable for use in peripheral neuritis and peripheral nerve disorders. Patients with diabetic peripheral neuropathy and symptoms of numbness and tingling at the end of the limbs can take methylcobalamin and mikobal by mouth for nerve nutrition treatment. In addition, mecobalamin can also be used for hyperhomocysteinemia. Patients can take oral folic acid to reduce homocysteine in blood, and mecobalamin can also be used to treat anemia caused by vitamin B12 deficiency.