Mylanta is a brand of antacid medication used to treat symptoms of too much stomach acid such as heartburn, acid indigestion, and stomach upset. It works by neutralizing existing acid in the stomach and does not prevent acid production. Mylanta is available in both liquid and tablet form and is usually taken after meals and at bedtime as needed. It is also available in different flavors and strengths, with Mylanta Maximum Strength being the strongest formulation available. Mylanta is generally considered safe, but it is important to talk to a doctor or pharmacist before taking it, especially if you have any allergies or health conditions.