Psyllium is a true dietary fiber, even though it is classified by some as a laxative or mucilaginous fiber, and is a convenient way to increase intake of dietary fiber because of its high mucilage content.&ampnbsp; This bulking agent swells considerably when added to liquid, which can help to support healthy gastrointestinal transit time.&ampnbsp; This bulking action and healthy transit time can play an important role in maintaining healthy gastrointestinal function.*