Why are betaine, papain, bromelain and trypsin not used in these products?
Betaine is not an enzyme. During the digestive process, it donates methionine (which contains sulfur) to the liver for the assimilation of protein. Papain and bromelain are plant enzymes that have their peak activity in temperatures above body temperature. At body temperature, bromelain and papain work at reduced efficacy. The plant enzymes in our enzyme supplements have their peak activity range between 95° and 105° Fahrenheit, well within body temperature.