Used as an antacid to neutralize stomach acid, providing relief from heartburn, indigestion, and upset stomach. It works by reacting with hydrochloric acid in the stomach to reduce acidity and soothe irritation. Also serves as a mild adsorbent, helping to bind and remove excess acids and toxins in the gastrointestinal tract. Commonly found in over-the-counter digestive remedies and combination antacid formulations.