Hydromorphone side effects

I suffer from severe endometriosis, and occasionally, if something goes awry, I have terrible cramping. The pain is extremely intense and has caused me to pass out. I have tried several medications, some narcotic, some non, and some naturopathic. I would say that Dilaudid is the best I've tried. Not only does it do a wonderful job of getting rid of pain, it also seems to be easier on the stomach than other opiates in its class, and causes less side effects. Of course, highly addictive such as other narcotics, but if taken only when needed it is a lifesaver.