pain
"I was given Dilaudid while being treated in the hospital for gastritis/esophogeal pain.  The pain was very severe and my blood pressure rose to over 200/100.  Within 30 seconds of the Dilaudid being inserted into my I.V., the pain in my sternum was gone and I was relaxed and sleepy. (After the first "Whoooosh" head rush).  Although I could have it every 2 hours, after the first 2 doses, the pain relief lasted 4-6 hours.  Most effective, and I reacted to it better than I had done in previous hospitalizations when receiving morphine.  "