Trypsin

Bromelain is a mixture of enzymes found in pineapples (Ananas comosus) that digest protein (proteolytic). Pineapple has been used for centuries in Central and South America to treat indigestion and reduce inflammation.

Chymotrypsin is a digestive enzyme synthesized in the pancreas that plays an essential role in proteolysis, or the breakdown of proteins and polypeptides. As a component in the pancreatic juice, chymotrypsin aids in the digestion of proteins in the duodenum by preferentially cleaving peptide amide bonds.

Pancreatin is an extract of pancreas, and contains enzymes with proteinase, amylase, and lipase activity; most commercial formulations are similar or identical

Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen.