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A proton pump inhibitor, or PPI, is a medicine that reduces stomach acid production. PPIs block acid pumps in stomach lining cells called parietal cells. They are used for acid reflux, GERD, erosive esophagitis, ulcers, and other acid-related conditions. Some PPIs are sold over the counter, while others require a prescription.
read more about proton pump inhibitor ...Stomach acid is released through proton pumps in the parietal cells of the stomach lining. PPIs block those pumps, which lowers the amount of acid released into the stomach. Because they act near the final step of acid production, PPIs can reduce acid more strongly and for longer than some other heartburn medicines. They work best when taken according to the product label or prescriber's directions.
PPIs are used for frequent heartburn, gastroesophageal reflux disease, erosive esophagitis, stomach ulcers, duodenal ulcers, and Helicobacter pylori treatment regimens. They can also be used for conditions that cause too much stomach acid, such as Zollinger-Ellison syndrome. Short courses are common for heartburn, while some conditions need longer treatment. Persistent symptoms, trouble swallowing, weight loss, vomiting blood, or black stools need medical care.
Common PPIs include omeprazole, esomeprazole, lansoprazole, pantoprazole, rabeprazole, and dexlansoprazole. Some are available over the counter for frequent heartburn, while prescription versions can be used for diagnosed acid-related disease. PPIs are different from antacids, which neutralize acid already in the stomach. They are also different from H2 blockers, which reduce acid through histamine-2 receptors.
PPIs can cause headache, nausea, diarrhea, constipation, gas, stomach pain, dizziness, or rash. Longer use has been linked with low magnesium, vitamin B12 deficiency, bone fracture risk, kidney problems, and certain infections in some patients. Stopping suddenly after longer use can cause rebound acid symptoms. Seek care for severe diarrhea, chest pain, vomiting blood, black stools, severe allergic reaction, or symptoms that keep returning.
Yes, omeprazole is a proton pump inhibitor. Other examples include esomeprazole, lansoprazole, pantoprazole, rabeprazole, and dexlansoprazole.
No, PPIs reduce stomach acid production, while antacids neutralize acid that is already in the stomach. Antacids can work faster, but PPIs last longer.
Some people take PPIs daily when a clinician recommends it. Long-term daily use should be reviewed because monitoring or a different plan can be needed.
Yes, rebound acid symptoms can happen after stopping a PPI, especially after longer use. A clinician can recommend a taper or another approach when needed.
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