I to have a pump with Morphine being the doctors choice. I had been on oral morphine for at least 10 years and being older wanted relief without worrying about addiction and stomach problems. I too have had many adjustments, but remain lower than the tabs I had taken. I think I really started doing much better when I realized that my back pain was being addressed, which is why I originally wanted this pump. I expected all body pains to being addressed, but that is not the case. It was installed so that the spinal cord is sprayed with the measured amount of morphine, and because the back pain is controlled through the spinal cord, and the pain center, it really helps. Other pain, not back, I handle with 600 mg Tylenol. I hope I didn't sound like I was trying to sound like an expert on these pumps, just trying to say, mine works beautifully.