I was on it for several months and always had trouble getting it on time through mail due to the control substance classification. I didn’t have much trouble going off it, I actually felt better. The pain did not return immediately so nothing was needed as a substitute right away. When I got my refill I only took a single dose and had a major reaction. Since then I was prescribed Tramadol to take on a regular basis for a different condition and it helps with the fibromyalgia pain also.