Dr. Houston's Highest Quality EnzymesEnzyme with DPP IV ActivityAdvanced Formula ProteaseDigestive Support for ProteinsAids in Breakdown of Gluten and CaseinDietary SupplementAll VegetarianThe Authority of EnzymesAFP Peptizyde (Advanced Formula Protease) supports the digestion of food proteins, including gluten, casein, and soy. AFP Peptizyde includes DPP IV enzyme activity which aids in the breakdown of casein and gluten.AFP Peptizyde was developed by Dr. Devin Houston, PhD - Enzyme Biochemist