Prevacid, also known as lansoprazole, is a form of medication used to treat ulcers, gastroesophageal reflux, Zollinger-Ellison syndrome and erosive esophagitis.

This medication works by stopping and blocking acid production in the stomach to prevent ulcers from forming in the stomach and esophagus.

Prevacid is taken orally, in the form of delayed release capsules. It is generally taken once a day, before the patient has eaten, as prescribed by a medical professional.

Common side effects users may experience when taking Prevacid include stomach pain and diarrhea. Compared to other medications, Prevacid is less likely to cause severe side effects in most patients.

Occasionally Prevacid is combined with other medications in order to eliminate H. pylori. It may be prescribed by doctors for other purposes as well.

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