Shivering while hemiplegic is not effective with methylcobalamin tablets. Shivering in hemiplegia may be caused by epilepsy, nerve damage, calcium deficiency and other reasons. 1. Epilepsy: If hemiplegia is caused by central nervous system damage, the damaged brain cells may have abnormal discharges, resulting in seizures and shivering. 2. Nerve damage: Patients with damage to extrapyramidal nerves may experience involuntary shaking of the body. 3. Calcium deficiency: If hemiplegic patients do not eat well, insufficient calcium intake can lead to hypocalcemia, which can increase neuromuscular excitability and lead to shivering or convulsions. Mecobalamin tablets are mainly used for peripheral neuropathy caused by vitamin B12 deficiency. There are many reasons for the occurrence of shivering in hemiplegia, which should not be used blindly. It is recommended to consult a doctor in time to clarify the cause of the disease and carry out standardized treatment under the guidance of the doctor.