Tizanidine hydrochloride (
Zanaflex®) is a prescription medication used to treat spasticity, a condition involving muscle spasms, cramps, and tightness that is often caused by
multiple sclerosis (
MS) or spinal cord injuries or diseases. It is short-acting (each dose only lasts for a few hours) and should be reserved for daily activities when spasticity control is most important.
As with any medicine, side effects are possible with tizanidine.
However, not everyone who takes the drug will experience problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can be treated easily by you or your healthcare provider. Serious reactions are less common.
Some of the most common side effects of tizanidine include but are not limited to:
- Weakness, fatigue, or tiredness
- Drowsiness
- Dry mouth.
(Click Tizanidine Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)