Simethicone is a mixture of polydimethylsiloxane and hydrated silica gel. It is mainly administered as oral liquid and as an anti-foaming agent that can diminish discomfort, bloating, or pain caused by excessive gas in the stomach or intestines caused by swallowing air, as well as mundane amounts of methane and hydrogen. Simethicone oral liquid is used to relieve symptoms of extra gas caused by certain foods or infant formulas or air swallowing. Simethicone is utilized to treat the symptoms of high stomach acid, like heartburn, stomach upset, and acid indigestion. It is also utilized to relieve symptoms of extra gas such as belching, bloating, and feelings of the pressure of discomfort in the stomach or gut.