muscle spasm
"I started having severe lower back pain in 1995 and was prescribed Flexeril at the time. I ended up staying on it until 2009. My new doctor decided to take me off it for 3-months and I ended up in the ER with my back in severe pain, every 3 weeks like clockwork. They decided to try the ophenadrine at 100mg. I take it once a day in the morning and I haven't felt so good in all the years. I was on the Flexeril 40mg. I don't know how long it will keep working but I've been taking one a day for a whole month now and I'm about to run out.. with no refills. I'm very-nervous about the pain coming back but for now I give this medicine a thumbs up."