How Lansoprazole Works
The active ingredient in Prevacid®24HR is lansoprazole (lan-SOH-pra-zohl), a type of proton pump inhibitor, or PPI for short. PPIs work by turning off the proton pumps that produce acid in your stomach. Frequent heartburn is caused when excess acid, produced by these pumps, escapes into your esophagus. By turning off these proton pumps, Prevacid®24HR prevents the acid that causes frequent heartburn.
One pill of Prevacid®24HR works for a full 24 hours*.