I was prescribed Robaxin by the neuro who did my back surgeries. He refused to use Soma, his only alternative was Skelaxin. Neither had any effect for me. Apparently the guy loved them because he would write scripts for them in huge amounts....like 300 at a time. Told me you could *double up* on the dose and be fine. Maybe so, but the kicker is they don't WORK. My opinion - Soma is the one that works. Zanaflex works great but puts you to sleep.