check out the Colloidal Silver forum. Its very cheap if you make it yourself. if you bought the silver at the healthfood store, it would be far far too expensive. when you buy your own kit to make it, its cheap. I bought a silver puppy online from coyote enterprises. this silver generator has a good reputation, but, there are others... If you don't know anything about Colloidal Silver , I would recommend checking out that forum for a few days, it won't take long to figure out how it works.