What is the primary role of antacids?

Antacids are primarily used to reduce stomach acidity. They work by neutralizing excess hydrochloric acid in the stomach, which helps alleviate symptoms associated with conditions such as heartburn, indigestion, and gastroesophageal reflux disease (GERD). By lowering the acidity of the stomach contents, antacids can provide quick relief from discomfort and promote better digestive health. This action is particularly beneficial for individuals who experience a burning sensation in the chest or throat due to acid reflux.

The other options focus on different effects that do not pertain to the main function of antacids. Increasing appetite is not a function of antacids, nor do they treat bacterial infections, which are typically managed with antibiotics. Additionally, antacids do not address headaches, which may require different types of analgesics or medications tailored for pain relief. Understanding the specific role of antacids is crucial for effective treatment of acidity-related issues in the digestive system.