Another note: I've taken every opiate that I know of. I have no ill effects with hydrocodone , oxycodone, mephedrine, methadone, morphine, oxymorphone etc, etc. . BUT- -HYDROMORPHONE makes me Beyond sick. Some people like me don't have the enzyme to digest that particular opiate. FYI-start very low, work up from there.
As said B4, Dillaudid mainly comes in 2mg, 4mg, and 8mg tablets (very small like tic tacs, or "shield shaped" 8mg tabs. 3mg sounds fishy... maybe foreign? And yes there are XR's, but I've never Came across them.
Be safe; that stuff is VERY addictive, like over 2-3 days, my friends have been able to kick smack, but Dillaudids are shorter acting and such.
Peace y'all!