Thanks for posting this; only confirms what some reputable doctors, including Dr. at Jetti Katz in NY do not believe; Metronidazole does not work; I took it twice; once 750mg for 21 days; it did nothing, except make very very sick and tired; The doctors do not seem to read these report that keep saying that Metronidazole does not work against Blasto. I told the doctor at Jetti Katz and he yelled at me, saying he knows best.