If you're one of the 50 million adults in the U.S. who suffer from frequent heartburn, then Prevacid may help to reduce your irritating, long-lasting heartburn pain. This Proton Pump Inhibitor prevents the stomach from releasing acids that wreak havoc on your esophagus. Prevacid is taken in periods of 10 to 14 days, which can be repeated every 4 months if needed. Don't be afraid of your favorite foods any longer. Try Prevacid.