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Information about Gas-X

What this drug is used for Gas-X relieves the bloating, pressure, and fullness that result from gas. The active ingredient is simethicone. The drug acts on the surface of bubbles by reducing the surface tension and thereby disrupting or breaking the bubble. Simethicone is used for excess gas in the intestinal tract. When these frothy bubbles are in the stomach or lower bowel, this medication helps the air be more readily expelled by belching or passing flatus. The drug does not prevent the formation of gas from swallowed air or from being created by intestinal bacteria. It does not make intestinal gases dissolve or disappear.

Some people may mistakenly think that simethicone prevents formation of flatus or rectal gas. It does not do this. The drug simply makes big bubbles out of many small ones.

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