I must say i agree with Jon- you said chronic back pain,,, is it muscles? joints? discs? sciatica?........ i know a lot of back medications, i suffer from chronic pain myself, but you did not mention a diagnosis for your lower back, perhaps if you could be more specific, i could make a few suggestions, however, Talking to your Doctor is very important before making decisions. Also, what other meds were you on for it before? ( if you were ).... good luck,,, i feel for you,,,
Linda