Claritin (Loratadine) is prescribed for any problem caused by an overabundance of stomach acid. The medication causes the stomach to produce less acid. Tablet LANSOPRAZOLE (lan SAW pra zol) Possible Uses of This Medication Prescription Prevacid is used to alleviate the symptoms of esophagitis, ulcers, and other conditions caused by an overabundance of stomach acid. It does this by cutting down on the amount of acid produced by the stomach. Before using Before taking lansoprazole, tell your doctor if you ever have liver disease. More info... How to take this medication Prevacid should be taken once a day, and one hour before a meal, or as directed. Your doctor may recommend two doses per day. More info... Cautions To ensure that Prevacid is safe for you, tell your primary care physician about any other medications you use, including digoxin, sucralfate, ampicillin, iron, theophylline, or ketoconazole. More info... Possible side effects Some mild side effects may occur with Prevacid. They may include nausea or stomach pain. More info... Drug interactions When taken at the same time as other drugs, Prevacid can cause a reduction in the effectiveness of those drugs. More info... Missed Dose Take Prevacid according to your dosing schedule. If you forget take it at your regularly scheduled time, take it when you remember, unless it is almost time for your next dose. Do not double dose. Storage Prevacid is to be kept at room temperature and in a place free of moisture and excessive sunlight. Keep out of reach of children. Other Information Prevacid causes the stomach to produce less acid. It is helpful in treating ulcers of the stomach or intestines, erosive esophagitis, or other problems caused by having too much stomach acid, such as Zollinger-Ellis syndrome. More info...