Does Beano gas have any side effects?

There are no known side effects from Beano gas relief, which is also known as alpha-d-galactosidase. Some unreported side effects may still exist, even if they have not been recorded with the FDA, Drugs.com states.

Alpha-d-galactosidase is the active ingredient in Beano, and it is made from food-grade mold that is deemed safe. If a rare sensitivity occurs, however, the individual should discontinue the use of Beano, or alpha-d-galactosidase, and consult a doctor for medical advice. The side effects information stated herein relates to the alpha-d-galactosidase contained in oral capsules, oral drops and oral chewable tablets like those made by Beano, notes Drugs.com.