Tizanidine belongs to a group of medicines called muscle relaxants. Muscle relaxants are medicines that are used to prevent or reduce muscle spasms and spasticity. Spasticity occurs when muscles contract tightly and become stiff and harder to use. It often causes pain and discomfort.
This is a companion discussion topic for the original article at https://patient.info/medicine/tizanidine-for-muscle-spasm-2