Methylcobalamin tablets can not be used to treat insomnia, it is a methylated vitamin B12, is a class of drugs that nourish the peripheral nerves, vitamin B1 and vitamin B12, are essential nutrients for the synthesis of myelin sheaths of the peripheral nerves, the patient if the lack of these two substances may cause myelin sheaths to generate obstacles, resulting in peripheral neuropathy, numbness of the hands, feet and other symptoms, so patients with peripheral neuropathy Methylcobalamin tablets, together with vitamin B1 tablets, can be taken orally to treat peripheral neuropathy. However, there is no connection between methylcobalamin tablets and insomnia. If insomnia patients are accompanied by peripheral neuropathy, they can take methylcobalamin tablets orally, which has no effect on insomnia. It is recommended that insomnia patients clarify the cause of insomnia, see whether there is anxiety, depression and other emotions, and go to neurology or psychiatry.