Dilaudid
"I pass chronic kidney stones and have had numerous stones removed via surgery. A few times my kidneys have shut down via urine back pumping from obstructing stones. In this case a shot of Dilaudid every 15 minutes kept me laughing and giggling with the nurses. Amazing stuff.  For my day to day pain from stones and stone related damage to my urinary tract Dilaudid is really the only medicine which is proven to help time and time again. I've been on every pain medicine it seems over the years and while Demerol is a close second, Dilaudid is what keeps me productive at work.  I'm on 8mg but cut them in half as needed. "