I have no experience with this drug. I know it is long acting hydromorphone and the side effects and all, and I have worked with the short acting form, but what I would like is to hear from any of you who tried it, or who take it now and how well did it work for you? My Dr just switched me from MS Contin to Exalgo because the morphine just pretty much stopped working. I seem to get a bad pain flare every Fall and every Spring/Summer and I hit a bad one when the weather started cooling off. thanks.