Due to the normal physiologic effect caused by the inhibition of gastric acid secretion, decrease of about 17 in blood flow in the antrum, pylorus, and duodenal bulb was seen. See Clinical Studies Pathological Hypersecretory Conditions Including Zollinger-Ellison Syndrome PREVACID is indicated for the long-term treatment of pathological hypersecretory conditions, including Zollinger-Ellison syndrome. Another study for the same indication, where patients took either COX-2 inhibitor or lansoprazole and naproxen, demonstrated that the safety profile was similar to the prior study. The following numbers do not provide medical advice, but in the US you may report side effects to the Food and Drug Administration FDA at 1-800-FDA-1088. Directions for use specific to the route and available methods of administration for each of these dosage forms is presented below. In clinical trials using combination therapy with PREVACID plus amoxicillin and clarithromycin, and PREVACID plus amoxicillin, no increased laboratory abnormalities particular to these drug combinations were observed. During an episode of acid reflux, you may lansoprazole najcenejsi taste food or sour liquid at the back of your mouth or feel burning sensation in your chest heartburn.