In 2011, the U.S. Food and Drug Administration recalled two different Maalox products, citing the presence of a foreign substance as the reason for removing the product from the marketplace, according to the FDA. The substance, a small amount of unverified water, leaked into the batches in the manufacturing process.
The Maalox products affected by the recall are Maalox Advanced maximum-strength antacid and antigas in cherry flavor and Maalox nighttime liquid antacid with acid reflux barrier in mint. The recall went into effect September 2011, and the products included in the recall expired in 2013. The recalled products were sold in the United States and Canada.