"i was in the e.r. for pain associated with condition causing kidney stone {1 in each kidney}. i am severely allergic to all anti-emetic drugs (anti nausea/vomiting drugs) but i required a potent pain killer. i was given dilaudid by i.v. having never been on anything stronger than percocet pills the doctors were afraid that i&#039;d become very nauseous and vomit profusely and unable to be treated for nausea. to my relief it did the trick! i only vomited once, was prescribed hydromorphone 2mg. no side effects! i was to sick to see the beauty in everyday life, until now!"