30mg Roxy's are pretty powerful things, so it may linger a while. I'm gonna be honest here, I tried Flexeril
during most all of my detoxes. They never seemed to help
me at all. That being said, I'm pretty tolerant to muscle relaxers, so none of them did me very much good even when I was using. Try them before bedtime, they may help
you to sleep. Please, resist the urge to take large doses. Keep it at or under the dosages on the bottle.