Patients taking methylcobalamin tablets can drink alcohol because methylcobalamin tablets do not conflict with alcohol, so it will not bring about conflicts between drugs and food, but it is not recommended for patients to drink alcohol during taking the drug. If patients drink alcohol for a long time, especially in large quantities, it will easily cause difficulty in the absorption of vitamin B12 in the stomach, thus causing peripheral neuropathy. Patients in this category cannot improve their symptoms by simply taking methylcobalamin tablets, but should also stop drinking alcohol, which is the most crucial step. It is also not good for the disease for patients to drink alcohol while taking the drug, because drinking alcohol is a negative factor for the liver, cerebral blood vessels, brain nerves and peripheral nerves. There are not too many contraindications when taking methylcobalamin in general.