Hydrochloric Acid: The Key Component of Gastric Juice - Benefits & Function

The main component of gastric juice is hydrochloric acid (HCl). Hydrochloric acid is a strong acid that helps to break down food and kill harmful bacteria in the stomach. It also helps to absorb certain nutrients, such as iron and vitamin B12. Gastric juice also contains enzymes, such as pepsin, that help to break down proteins.