Definition: Antacid means a medicine used to relieve mild to moderate symptoms of acid reflux, including heartburn, upset stomach, or indigestion. It's also known as proton pump inhibitor (PPI). Detailed definition: Antacids are drugs that neutralize or reduce the amount of acid produced by the body's stomach. They work by acting on the lining of the stomach and esophagus to prevent food from being churned up and spread into the digestive tract. What is it? It's a drug used to treat mild to moderate symptoms of acid reflux, heartburn, upset stomach, or indigestion. Antacids are drugs that neutralize or reduce the amount of acid produced by the body’s stomach. - They work by acting on the lining of the stomach and esophagus to prevent food from being churned up and spread into the digestive tract - Antacids are used in combination with other medications, such as antispasmodics, to treat more severe conditions like GERD (gastroesophageal reflux disease) - They can also be taken by mouth or through a pill form - It should only be taken by healthcare professionals for pain relief and not for long-term management of acid reflux