muscle spasm
"I was perscribed 2 100 mg tablets twice a day for muscle spasms.  This is the worst experience I have ever had. Only took 2 1 in morning and 1 in evening. I was up for 3 days straight jittery, agitated,  mildly confused and spaced out. I had no pain but could not function a normal life on Norflex. I am 120 pounds."