You know what? I felt really really aweful today, like I was going through withdraw symtoms from NO Hydro even after taking the Darvacet. I finally gave in and took some Hydo today because I couldn't stand it and now I feel better again. So my point is that Darvacet did nothing for my withdraw of Hydro. I do take Ultram during those "holidays" and I feel fine(but with pain).