I too, had doubts about buying a Zapper, but ordered one anyway. I have used mine only two days, and I noticed last nite (2nd time)
that I could feel a tingle or prickly feeling in my lower stomach, and a tingle in my liver area. No, I have not seen any parasites yet...
but, I feel like it is working. So many testimonials from other people also made me decide to buy one. You have to just make up your
own mind.
To Joe: go to www.zapperguy.com I purchased mine from that site...was about $85.00