A soluble fiber type that creates a gel-like material which, when combined with water and taken, can aid in controlling bowel movements by softening stool and providing bulk in cases of diarrhea. Psyllium has arabinoxylan, which is prebiotic and enhances the gut microbiome and, in particular, elevates bacteria that produce butyrate, a short-chain fatty acid. Unlike certain fibers, which can exacerbate bloating and its symptoms, psyllium tends to get along well with IBS. It aids overall gut mobility and facilitates normal bowel movements.