Like you ( sick of hives ) I have never tolerated any of the anti=parasitic herbs. They burnt up my gut lining ( oh dear, the pain! ) I just assumed I had some creatures lurking in there tho because they do typically go together ( candida and parasites ). Since I was too sensitive I chose to work on rebuilding the gut flora and let it take of it all. I guess it's working because I'm soooo much better these days and have formed bm's every day, which I never had before.