Chymotrypsin is one of the proteolytic enzymes secreted by the pancreas. A digestive enzyme needed to cleave proteins into peptides and amino acids, it continues the hydrolytic action begun by pepsin, and together they break molecules into smaller and smaller peptide fragments. Chymotrypsin specifically hydrolyzes/cleaves proteins at the amino acids in phenylalanine and tyrosine peptide linkages and ester bonds. This ingredient does its work in the small intestines. Chymotrypsin is generally used to aid in digestion and as an anti-inflammatory. This ingredient is also helpful for those with diseases, such as cystic fibrosis, in which the pancreas produce insufficient amounts of enzymes.