There is no such thing as “why can’t you take methylcobalamin for diabetes”, and diabetic patients who have no contraindications to methylcobalamin tablets and meet the indications for methylcobalamin tablets can take methylcobalamin tablets under the guidance of a doctor. Methylcobalamin Tablets is a kind of endogenous coenzyme B12, which can promote the metabolism of nucleic acid and the utilization of folic acid, promote the transport and regeneration of axons and inhibit the role of neuropathy; it can be used for the treatment of peripheral neuropathy. It should not be used in patients who are allergic to methylcobalamin or any of the excipients in the prescription. Therefore, diabetic patients who do not have contraindications to methylcobalamin tablets and meet the indications for methylcobalamin tablets can be treated with methylcobalamin tablets under the guidance of a doctor. Adverse reactions such as loss of appetite, nausea, vomiting, diarrhea and urticaria may occur after taking the drug. Diabetic patients who need to use methylcobalamin tablets for treatment should be treated with medication under the guidance of a doctor.