muscle spasm
"I had right shoulder ,arm, and neck pain for 2 weeks - I had taken norco at night so I could sleep but the pain was to much and I had no relief. my orthopedic doc prescribed flexerol 5 mg I took one at dinner but 3 hrs in still no relief - took a pain med (oxy) fell asleep a while later- next morning I woke up and no pain- first time in two weeks! Since the pain meds had no affect I know the flexerol did its job. I felt a little " hungover" but ok- next night I took it alone and I had no side affects the next day-"