I wonder if you ate enticing foods for a week or so to get them back in your intestines, while not taking any anti- parasite measures, then hit them with something?
Oh, and one thing I might have forgotten to mention, I ate pretty normally when I was taking the herb and still got results, although the results were better when I ate very light or almost nothing. This is hard to do, but when I am in a die-off period, I have basically no appetite anyway.