I don't see how killing parasites or using a yeast buster would make me more susceptible to a fungal infection. The two things are supposed to increase your immunity, not decrease it. As for taking both cleanses at the same time, it's RECOMMENDED, according to this site, as it removes the toxins FASTER, even if I did them individually, it says to do the parasite one first, which means my bowels would be processing things no better, and likely a lot worse, than the way I am doing it now with the P&B shakes.. These cleanses are supposed to HEIGHTEN the immune response by improving your overall health, one of the most prominent ways to get a fungal infection is from a LOWERED immune response, and the only way it could have been lowered is from these cleanses. I have had no sign of parasites, so it's not like I'm getting die off and their toxins are causing a decline in my immune system. My guess is that the parasite cleanse killed off all the good bacteria in my system, and caused candidiasas, which basically means, it worked no better than an antibiotic and was a waste of my time and money to bother.