Lansoprazole
Lansoprazole is a proton pump inhibitor that reduces stomach acid production, commonly used to treat gastroesophageal reflux disease (GERD) and other acid-related conditions.
Lansoprazole is a proton pump inhibitor used to reduce stomach acid for treating ulcers, reflux, and related digestive conditions.
Key facts at a glance
- ATC
- A02BC03
- RxNorm
- 17128
- Generic
- Lansoprazole
- Class
- atc-a02
- Brands
- Prevacid
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- capsule, tablet, solution
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment and maintenance of gastric and duodenal ulcers, gastroesophageal reflux disease (GERD), erosive esophagitis, and Zollinger-Ellison syndrome. Also used in combination with antibiotics for Helicobacter pylori eradication.
Specifically inhibits the (H+, K+)-ATPase enzyme system (proton pump) located at the secretory surface of gastric parietal cells, thereby blocking the final step of acid production and reducing gastric acid secretion.
Should be taken before meals, preferably in the morning. May affect absorption of certain drugs. Long-term use may be associated with increased risk of fractures, hypomagnesemia, and vitamin B12 deficiency. Consult healthcare provider for appropriate duration of therapy.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy