The enzyme pepsin in the stomach and the enzymes trypsin and chymotrypsin, produced by the pancreas and delivered to the small intestine by pancreatic juice, break down protein to short chains of amino acids. (nutrientsreview.com)
Because the higher pH level inactivates pepsin which is an enzyme involved in breaking down food proteins and a main reason of acid reflux. (selfcarer.com)
As for me, I've been taking Betaine with pepsin supplements for a few weeks now, mostly because I am having a tough time fighting off an annoying onslaught of heartburn as soon as I switched over to a more whole foods, lower carb diet. (westonaprice.org)