Digestive enzymes are complex proteins involved in digestion that stimulate chemical changes in other substances they work optimally at specific temperature and ph digestive enzymes include pancreatic enzymes plantderived enzymes and fungalderived enzymes there are three classes of digestive enzymes proteolytic enzymes needed to digest protein lipases needed to digestfat and amylases needed to digest carbohydratesdirections for use as a food supplement for adults one 1 or more tablets