Mecobalamin injection is used intravenously by mixing a certain specification of Mecobalamin injection with a certain concentration and content of dextrose injection and then intravenously by medical personnel on medical advice. Mecobalamin Injection is a coenzyme drug, the main component of which is methylcobalamin, which can be used for the treatment of peripheral neuropathy and megaloblastic anemia caused by vitamin B12 deficiency, and its use should be carried out in medical institutions by professional medical personnel according to the above requirements. It should be noted that the use of this product may be headache, fever, rash and other adverse reactions and allergic reactions such as decreased blood pressure, dyspnea, etc., at this time the drug should be discontinued, notify the physician to carry out the necessary treatment, and should also be prohibited for those who are allergic to the product and the ingredients contained therein.