A bulk producing fiber and laxative supplement which assists in your body's natural toxic removal process to make you feel lighter and more active. If you take Metamucil every day, it will naturally help the elimination of unwanted waste from your body to keep your digestive system clean. Metamucil contains Psyllium Husk which provides the bulk to the digested food which helps it move through the digestive system. Psyllium is a bulk-forming fibre. It works primarily through mechanical effect by absorbing water, bulking the colonic contents and decreasing transit time.