Ingredients & DescriptionPepZin GI is an exclusive, patented complex of zinc and L-carnosine that was first developed in Japan and has been in use since 1994. This special chelated form of the mineral zinc has a unique ability to exert its effects directly on the cells of the stomach lining. When zinc is complexed to L-carnosine, it dissociates in the stomach at a slower rate. This prolonged existence allows it to maintain its gastric healing effect over a longer period of time. The proprietary chelation process along with excellent scientific research make PepZin GI your best choice for supporting gastric health.