Tums is an over-the-counter antacid medication used to relieve heartburn, indigestion, and upset stomach. It contains calcium carbonate, which neutralizes stomach acid, providing quick relief from discomfort. Tums is available in various flavors and forms, including chewable tablets. Many people use Tums as a fast-acting solution for occasional digestive issues. It is generally considered safe for most adults, but excessive use can lead to side effects like constipation or increased calcium levels. Always follow the recommended dosage and consult a healthcare professional if symptoms persist.