Acid reflux. Sounds terrible, right? Where does this acid come from? Our stomachs, of course. The acid level in our stomach is critical to breaking down those foods we ingest, so that enzymes can get the nutrients from our food. And, if we ingest a pathogen or two, then the acid milieu makes toast of them. Of course, that same acid means that many of the pills we take to feel better or repair our physiological problems get destroyed, too.