What do antacids do?

Antacids are designed to reduce acidity in the stomach, primarily by neutralizing gastric acid. They contain alkaline substances that react with hydrochloric acid, which leads to a decrease in the overall acidity of gastric contents. This action helps alleviate symptoms associated with excessive stomach acid, such as heartburn, indigestion, and some types of ulcers. When the acidity is reduced, it can relieve discomfort and allow for more effective digestive processes in the gastrointestinal tract.

The roles of increasing acid production in the stomach or neutralizing pain receptors in the body are not functions of antacids. Instead, they are aimed at managing the pH balance in the stomach. Additionally, promoting the absorption of nutrients is not directly influenced by antacids, as their primary purpose is not related to nutrient absorption but rather to symptom relief from acidity. Thus, the focus remains on the neutralizing action of antacids, making the identification of their primary function crucial for understanding their role in managing digestive health.