I was on fentanyl, morphines and these other patches for a few years. After I had back surgery I was able to wean off cause the surgery fixed the problem. My pain med doc was weaning me down but not fast enough for me, I wanted off the meds and went down too fast. She was giving smaller and smaller patches but I was only wearing them for a short time, ands paceing out the time inbetween patches too. Had trouble sleeping, lost control of both bowls and bladder....would not recommend anyone else try that.