Wisconsin's Lowest Elevations: Shore of Lake Michigan (579 ft average). In December 1986, Emmet J. Judziewicz completed a project at the University of Wisconsin-Madison in which the following information was derived.
Since Metamucil wafers are cracker-like fiber supplements, the ingredients added are combined to create a dough. Wheat flour, fructose, soy lecithin and ascorbic acid are included in both the apple and cinnamon wafers. Wheat flour as the base is used as a binding and bulking agent.
Metamucil (psyllium) is a bulk-forming fiber laxative. Psyllium works by absorbing liquid in the intestines and swelling to create a softer, bulky stool that is easier to pass. See: https://www.drugs.com/mtm/metamucil.html. Bloating is a common side-effect of Metamucil.