I just started to take parasite cleanse drops for constant itching/crawling/biting sensation all over the body. I was wondering how long does it take for me to know that parasites are gone out of my system. I also have chronic constipation so I am thinking that may be a hindering factor? By the way, I am actually just learning about this so I don't really know what kind of parasites to even look for. Any help would be appreciated.