Butyric acid is a short-chain fatty acid (SCFA) produced by certain probiotic in the gut, which appears to support mucosal integrity.* Butyric acid acts as a primary fuel for the colonic epithelium (colonocytes), and via this means may be considered a support for the integrity of the colonic mucosa.* Butyric acid (“butyrate” when in salt form) is an important SCFA for this reason.*