There are anti-microbial agents, e.g., amphotericin B and nystatin, that when taken orally stay in the gut and do not enter the blood stream, which does not make them useless because many pathogens do the same thing.<p>Moreover, all the therapeutic clays and earths I&#x27;ve heard about, namely bentonite clay, activated charcoal and diatomaceous earth, are suspended in water and drunk.