muscle spasm
"5 or10mg  works for muscle spasms but Dangerous if taken during daytime. 



Caused uncontrolled drowsiness,  deep sleep, difficulty waking up, constipation, blurred vision and sudden unbearable  headaches leaving me unable to function. (5 or 10 MG doses were same effects) 



Lost a new job just 2 months after  starting due to not realizing it was this medication's side effects of: blurred vision,  migraines & exhaustion.  I was unable to keep up with workload and didn't relate it to Flexeril because I had been on it many years ago when I was much younger.  I tried to explain to my PCP  but some docs just don't listen.  I have since stopped flexeril, no more headaches!"