Houston Enzymes Tri-Enza is a broad-spectrum digestive enzyme formula developed specifically for children and adults with autism spectrum disorder (ASD), ADHD, and related neurodevelopmental conditions — addressing the enzyme deficiencies documented in many ASD patients that impair complete digestion of casein, gluten, and phenol-containing foods. 180 capsules.Tri-Enza combines three targeted enzyme classes in a single capsule: DPP-IV (Dipeptidyl Peptidase IV) — the enzyme deficient in many ASD patients that is responsible for breaking down casomorphin (from casein/dairy) and gluteomorphin (from gluten) opioid-like peptides that research suggests affect behaviour and cognition when incompletely digested; complete Protease blend for full protein digestion; and Phenol-digesting enzymes (Glucoamylase, Alpha-Galactosidase) for Phenolic compounds found in fruits, vegetables, and preservatives. Houston Enzymes are the original creator of enzyme therapy for autism — biochemist Dr. Jon Pangborn developed this protocol starting in the 1990s. Houston Enzymes is a specialized digestive enzyme company founded by biochemist Dr. Jon Pangborn — developing therapeutic enzyme formulas specifically for children and adults with autism spectrum disorder, ADHD, and related digestive enzyme insufficiencies. Available at Beauty Riche with same-day shipping.