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The esophagus is a tube that connects the mouth to the stomach. It is made of muscles that work to push food toward the stomach in rhythmic waves. Once in the stomach, food is prevented from refluxing (moving back into the esophagus), by a special area of circular muscle located at the junction of the esophagus and stomach, called the lower esophageal sphincter (LES). A pressure difference across the diaphragm, the flat muscle that separates the chest from the abdomen, also tends to keep stomach contents in the stomach.
The stomach combines food, acids, and enzymes together to begin digestion. There are special protective cells that line the stomach to prevent the acid from causing inflammation. The esophagus does not have this same protection; if stomach products reflux back into the esophagus, they can cause inflammation to the lining.
Heartburn is actually a symptom of G...
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Medical Editor: Melissa Conrad Stöppler, MD
Prevacid (lansoprazole) is a drug belonging to the class known as proton pump inhibitors (PPIs). Prevacid is used to treat and prevent stomach and intestinal ulcers, erosive esophagitis (damage to the esophagus from stomach acid), and other conditions involving excessive stomach acid such as Zollinger-Ellison syndrome. Lansoprazole is available in generic form. Side effects of Prevacid may include headache, nausea, diarrhea, stomach pain, or constipation.
Lansoprazole capsules should be taken before meals for maximum effect. Capsules should be swallowed whole and should not be crushed, split or chewed. The absorption of certain drugs may be affected by stomach acidity, and, as a result, Prevacid and other PPIs that reduce stomach acid also reduce the absorption and concentration in blood of ketoconazole (Nizoral) and increase the absorption and concentration in blood of digoxin (Lanoxin).
Our Prevacid Drug Center provides a comprehensive view of available drug information as well as related drugs, user reviews, supplements, and diseases and conditions.
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
PREVACID is indicated for short-term treatment (for 4 weeks) for healing and symptom relief of active duodenal ulcer [see Clinical Studies].
PREVACID in combination with amoxicillin plus clarithromycin as triple therapy is indicated for the treatment of patients with H. pylori infection and duodenal ulcer disease (active or one-year history of a duodenal u...
Read the complete drug monograph for Prevacid »
Drug Description - Indications & Dosage - Side Effects & Drug Interactions - Warnings & Precautions - Contraindications - Medication Guide and More
What is Patient information?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Less serious side effects may include:
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.
Read the complete patient information for Prevacid »
Possible Side Effects - Images - What Is - How Should I Take It - What If I Miss a Dose - What Should I Avoid and More
What is Consumer information?
A concise overview of the drug for the patient or caregiver from First DataBank.
If you are self-treating with this medication, over-the-counter lansoprazole products are used to treat frequent heartburn (occurrin...
Read the complete consumer information for Prevacid »
Warnings - Uses - How to Use - Side Effects - Precautions - Drug Interactions and More
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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