"after a major car accident two years ago, subsequent shoulder reconstruction surgeries and months of physical therapy, i am left with painful nerve damage in my shoulder. i tried many medicines intended for other uses but found to alleviate pain from nerve damage. but, they all made me ill. i also took hydrocodone until it started making me ill. a month ago, my doctor switched me to hydromorphone 2 mg, and it helped a little. when he upped my dosage to 4 mg every 4-6 hours, the relief was much greater and i&#039;ve had no major side effects. it&#039;s not a medicine that i want to take for the rest of my life, but it is certainly helping now. i would say it relieves about 75% of the pain. i would recommend trying it if other medicines have failed you."