It is a prescription drug and must be purchased and taken under the prescription of a licensed physician to avoid private use. Mecobalamin is usually used in the treatment of peripheral neuropathy, megaloblastic anemia and other diseases: 1. Peripheral neuropathy: Mecobalamin tablets can play a certain role in the treatment of peripheral neuropathy, such as diabetic peripheral neuropathy, sciatica, peripheral nerve entrapment syndrome, trigeminal neuralgia, facial nerve palsy and polyneuralgia. It helps to relieve numbness, pain and other sensory abnormalities caused by nerve damage, as well as motor disorders and other symptoms, and promote nerve repair. 2. megaloblastic anemia: methylcobalamin tablets are a kind of vitamin B12 drugs, which help to promote the formation of protein, nerve myelin, and nucleic acid of nerve cells, and can be used to treat megaloblastic anemia caused by the lack of vitamin B12. In addition, it should be noted that patients may experience nausea, vomiting, diarrhea and other adverse reactions after taking methylcobalamin tablets, which are usually normal. If a rash appears, it may be caused by allergy and should be discontinued immediately and go to the hospital in time to avoid delaying treatment.