When I took the CoQ10 I saw no signs of parasites during my elimination yet almost 4 days later I'm suddenly getting that odd smell I have begun to associate with the die off of parasites. I think I smelled it because I hadn't taken my normal morning Arginine yesterday so the ammonia wasn't as thouroughly mopped up. So even if you don't see anything doesn't mean you didn't kill eggs or such. Plus if they (parasites) are in muscle or somewhere like that the body would just have to break them down so you wouldn't see them.