"i developed severe pancreatitis and hepatitis due to gallstones. they tried morphine  first, but it makes me vomit even if they give me zofran, phenergan or reglan with it. i&#039;m allergic to many medications and latex. my only previous experience with painkillers was codeine for a severe cough and percocet for a gynecological issue. i had an anaphylactic reaction to the percocet. not fun. so they decided to try dilaudid on me - at least if i had a bad reaction to it, they could treat me immediately. i was so grateful! complete pain relief and no vomiting. no side effects either nor like i was on anything, it just made the pain stop. iv dilaudid worked within 30 seconds. they gave me pills to take home, the pills take about 30 minutes."