I have recently had back surgery robaxin seems to help me alleviate pain really well however my doctor has switched me over to zanaflex it so much weaker dose and doesn't help as much will it help me with pain as much as robaxin. I've never really felt like the doctor has had my best interest at heart I am in constant absolute pain robaxin helps a lot of zanaflex not so much the relax and I can take 176 hours does zanaflex says once at night out out out please help soon