muscle spasm
"I was prescribed Flexeril by my primary doctor for muscle spasms in my lower back.
I could only take it for a short time, I felt no relief in the spasms in my back, I had to sleep at least 10 hours with it, or I couldn't get out of the bed in the morning. I am heading to physical therapy, I'm sure they will help much better than a stupid muscle relaxer can."