I don't have any advice for you as I am on C. I do notice that I actually get more sinus infections while on C than I did before.

I would talk to your dr. about this before hand, but honey can act as an effective antibiotic (in some cases more than "manmade" antibiotics). When I was 1st diagnosed with MS my neuro at the time recommended that I take 1 tsp of honey a day to help my immune system.

Just some info. . . .I did a quick google on it.
http://www.news-medical.net/news/2006/07/27/19109.aspx

I hope the infection clears soon. Let us know how you are doing.