PepZin GI is a patented combination of zinc and l-carnosine. It began as a pharmaceutical drug in Japan and was submitted to the FDA in 1992 as a new dietary supplement. There has been much research conducted on the aid that PepZin GI gives to the stomach, promoting optimal stomach health and digestion. PepZin GI has been shown to provide a defense against damaging assaults on the stomach's mucosal cells. PepZin GI also has the ability to seek out and encourage the repair of injured thinning tissue.