I was annorexic and bulimic, so believe me i'm not judging you when I say this, but did you honestly think some one on here is going to tell you when it's safe for you to purge w/o losing your pill in the process?
As for your question I have no idea.. But I do have a friend who was bulimic for so long that she needs to have veneers put on her teeth. Stop worrying about puking up your pill, and worry about the big issue of being bulimic.