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Prilosec vs Protonix

Omeprazole  ·  Pantoprazole

Both are proton pump inhibitors. Here is how Prilosec and Protonix compare on class, mechanism, dosing, approval and supply.

At a glance

PrilosecOmeprazole
ProtonixPantoprazole
Brand names
Prilosec / Losec
Protonix
Drug class
Proton pump inhibitor
Proton pump inhibitor
Route
Oral
Not listed
Marketed by
AstraZeneca
Wyeth (Pfizer)
First FDA approval
14 Sep 1989
2 Feb 2000
US shortage
Not listed
Not listed

Key differences

What each one treats

PrilosecOmeprazole

PRILOSEC is a proton pump inhibitor (PPI) indicated for the: • Treatment of active duodenal ulcer in adults ( 1.1 ) • Eradication of Helicobacter pylori to reduce the risk of duodenal ulcer recurrence in adults ( 1.2 ) • Treatment of active benign gastric ulcer in adults ( 1.3 ) • Treatment of symptomatic gastroesophageal reflux disease (GERD) in patients 1 year of age and older ( 1.4 ) • Treatment of erosive esophagitis (EE) due to acid-mediated GERD in patients 1 month of age and older ( 1.5 ) • Maintenance of healing of EE due to acid-mediated GERD in patients 1 year of age and older ( 1.6 ) • Pathologic hypersecretory conditions in adults ( 1.7 ) 1.1 Treatment of Active Duodenal Ulcer PRILOSEC is indicated for short-term treatment of active duodenal ulcer in adults. Most patients heal within four weeks. Some patients may require an additional four weeks of therapy. 1.2 Helicobacter …

ProtonixPantoprazole

An oral or intravenous medication used to treat acid reflux and erosive esophagitis.

How each one works

PrilosecProton pump inhibitor

12.1 Mechanism of Action Omeprazole belongs to a class of antisecretory compounds, the substituted benzimidazoles, that suppress gastric acid secretion by specific inhibition of the H + /K + ATPase enzyme system at the secretory surface of the gastric parietal cell. Because this enzyme system is regarded as the acid (proton) pump within the gastric mucosa, omeprazole has been characterized as a gastric acid-pump inhibitor, in that it blocks the final step of acid production. This effect is dose-related and leads to inhibition of both basal and stimulated acid secretion irrespective of the stimulus.

ProtonixProton pump inhibitor

An oral or intravenous medication used to treat acid reflux and erosive esophagitis.

Related comparisons

Prilosec VS Nexium Nexium VS Protonix Prilosec VS Pepcid

Read more

Prilosec profile Protonix profile Proton Pump Inhibitors All comparisons
This is not medical advice, and not a recommendation of one drug over the other.

Which medicine is right for a given person depends on their diagnosis, other conditions, other medicines, kidney and liver function, pregnancy, and cost or reimbursement — none of which this page knows. Two drugs in the same class are not automatically interchangeable. Never start, stop or switch a prescription medicine on the basis of a web page; that decision belongs to you and your clinician or pharmacist.

Class and summary text is written by the Priya Life Science editorial team. Label, mechanism, route, manufacturer and approval data come from the U.S. FDA via the openFDA API; shortage status from the FDA Drug Shortage Database. Approvals, indications and brand names differ between the US, EU/Ireland (EMA/HPRA) and other regions — a drug approved in one may not be approved, or may carry a different name, in another.