A common kitchen ingredient known as a natural antacid is baking soda, or sodium bicarbonate. It works by neutralizing stomach acid, providing relief from heartburn and indigestion. Mixing a teaspoon of baking soda with a glass of water can help alleviate discomfort associated with excess stomach acid. However, it is essential to use it sparingly, as excessive consumption may cause metabolic alkalosis or other health issues. Additionally, individuals with certain medical conditions, such as high blood pressure, should consult a healthcare professional before using baking soda as an antacid.