Cyclobenzaprine
muscle spasm
"I've been on 5mg of flexeril for about a year & a half. I take it only when needed but I can rarely take it because it makes me sleepy. If I take it late at night I have a hard time waking up the next morning. I've found if I take it by 7pm it's not so bad waking up the next day. I have severe bladder spasms and flexeril has helped (when I can take it)"