Yes I find it interesting if Vit A has anything to do with this. I know that very soon after Accutane my lips reacted very badly to an A&D ointment, so I thought it was because of me having too much "A" via Accutane. Now, I may try eating foods high in A since I stayed away from them during that period. (But I have also read it could be a problem with absorbing A in general, which is more complicated).
Also with the zinc, I am definitely going to keep taking it. I know I started taking it in a bit higher doses than a regular multi-vit, but I was getting very bad stomach aches so I had to stop, and now I just get it in small doses. It also gave me vivid dreams and I think is helping my immune system!