Vitamin B1 as well as methylcobalamin can be taken at the same time. Methylcobalamin is an endogenous vitamin B12, which can nourish peripheral nerves and improve the symptoms of numbness and pain in the limbs, and is commonly used in clinical practice to treat peripheral neuritis or peripheral facial paralysis and intercostal neuritis. Vitamin B1 is naturally found in rice broth, pork and yeast. Vitamin B1 is essential for participating in sugar metabolism and has a role in the central nervous system and cardiovascular system. So it can also be used to treat abnormal sensation, neuralgia or weakness of the limbs. In the cardiovascular area, for example, when patients suffer from palpitations, shortness of breath and chest tightness due to cardiac neurosis, vitamin B1 can be used with glutamate to regulate the plant nerve function. Taking vitamin B1 and methylcobalamin at the same time can improve peripheral neuritis and improve the patient’s peripheral nerve disease.