Contains butyric acid in the form of tributyrin (CoreBiome Granules System), a microencapsulated Butyrate triglyceride + Zinc Gluconate. It is a short-chain fatty acid (SCFA) that is part of the so-called POSTBIOTICS, a micro-encapsulation system where it causes the Butyrate triglyceride to have a delayed intestinal release to reach the final parts of the colon intestine. Zinc contributes to the normal functioning of the immune system and the normal metabolism of macronutrients. Instructions for use: Take 1 to 3 capsules a day.