Alcohol is not usually recommended after taking methylcobalamin. Alcohol is usually not recommended while taking methylcobalamin. Drinking alcohol may make it more difficult for the stomach to absorb methylcobalamin and affect the effectiveness of the drug, so it is not recommended to drink alcohol while taking the drug. Mecobalamin is a neurotoxic medication that has the ability to nourish the nerves and promote nerve recovery. It is a kind of endogenous coenzyme B12, which can promote the synthesis of nucleic acid and the utilization of folic acid, regenerate the damaged nerve medulla or axon, and nourish the nerve cells to make them recover gradually. Note that it is contraindicated in patients with a history of hypersensitivity to methylcobalamin or any of the excipients in the prescription. Adverse reactions such as rash and itching may occur while taking the drug; seek medical attention and discontinue the medication as soon as it is detected.