muscle spasm
"I have used this medicine along with narcotic pain killers for a cervical disc protrusion. When I weaned off the pain killers, the Zanaflex really helped with the withdrawal symptoms (RLS, anxiety, sleeplessness) I was experiencing. This medicine still helps with the muscle spasms I get and it doesn't make me tired either, probably due to the high tolerance levels I have from years of abuse, however it really saved me during the Norco withdrawals - and have been off all narcotics for a few months now."