Nexium 24HR Acid Reducer, Delayed-Release Capsules (14 capsules, 3 pk.) 

For adults (18 years and older) Nexium 24HR is indicated for the treatment of frequent heartburn (two or more days a week). The active ingredient in Nexium 24HR is esomeprazole 20 mg, which is a part of a group of medications called proton pump inhibitors, or PPIs.

Proton Pump Inhibitors

Proton pump inhibitors (PPIs) are a group of medications that stop heartburn at the source by turning off many of the pumps that produce acid.

How Nexium 24HR treats frequent heartburn

Cells in the lining of the stomach contain proton pumps that produce the acid your body uses during digestion. Heartburn can be caused when this stomach acid flows up into the esophagus. Nexium 24HR protects you from frequent heartburn by turning your acid pumps from on to off, reducing the amount of acid that rises into your esophagus and alleviating heartburn.