I Was Taking Hydromorphone 4mg For My Back Pain (I

I was taking hydromorphone 4mg for my back pain (I have had 3 surgeries including a spinal cord stimulator) and another doctor has changed me to morphine surfer 30mg. I didn't have the bad side effects on the hydromorphone that I am having on the morphine sulfer, but I was told that the hydro... was much more addictive (I do not have any problems taking the medicine as prescribed). Any ideas??