Hi, I have never heard of that side effect... is there a chance that the spasms aren't a side effect of the oxy but a different symptom of whatever you are suffering from?
My opinion -- I took
flexeril and it did nothing for me. I tried a few other muscle relaxers too, which did not relieve my painsful spasms. The only MR I have taken that worked and still take is
Soma. I'm not sure about the
valium -- I know it's been used for that but I don't have any experience there. Good luck!