Anne, we Davids just seem to multiply, don't we!
Anywho the answer is yes, both as Percocet and then straight Oxy. I was eating them at a rate of hmm... 15 mgs (as 3x5) maybe 3-4 times a day. This went on for at least 6 weeks, maybe longer. I also had a Fentanyl patch - lowest dose I believe - for the last 2 weeks of RT.
I personally did not experience any withdrawal when I stopped this stuff, although I did take that 15 mgs of Oxy from time to time for quite awhile thereafter when I felt I needed it. I don't consider this any kind of classic tapering per se, as it was just a per-need thing. I do know that many people have problems however. Maybe someone with better knowledge will weigh in.
D (of many)