Prilosec vs. Pantoprazole
See how Prilosec and Pantoprazole compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Both Prilosec and pantoprazole are proton pump inhibitors that lower stomach acid, but Prilosec has FDA approval for more conditions, including ulcers and H. pylori eradication.
Prilosec is sold over the counter for short-term heartburn relief, while pantoprazole is prescription-only but also comes as an IV injection for hospitalized patients.
In clinical trials, pantoprazole was linked to higher rates of headache and diarrhea than Prilosec.
Prilosec vs. Pantoprazole Drug Summary
Prilosec
Prilosec (omeprazole) is a proton pump inhibitor that lowers stomach acid to treat GERD, erosive esophagitis, ulcers, and H. pylori infection. It's taken as a once-daily capsule, tablet, or oral suspension, usually before a meal, and is sold both by prescription and over the counter.
Pantoprazole
Pantoprazole is a proton pump inhibitor used for erosive esophagitis caused by GERD and for hypersecretory conditions like Zollinger-Ellison syndrome. It's available as an oral tablet, oral suspension, or IV injection, taken once or twice daily depending on the condition.
Prilosec vs. Pantoprazole Side Effects
Prilosec
Pantoprazole
Prilosec vs. Pantoprazole Dosage
Prilosec
Pantoprazole
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 120 mg three times daily | If needed |
| Dose changes | 4 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 40 mg once daily | Weeks 1-8 |
| Maximum dose | 40 mg twice daily | If needed |
| Dose changes | 1 increase | As tolerated |
Prilosec
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg once daily | At the start |
| Maximum dose | 120 mg three times daily | If needed |
| Dose changes | 4 increases | As tolerated |
Pantoprazole
| STAGE | DOSE | WHEN |
| Starting dose | 40 mg once daily | Weeks 1-8 |
| Maximum dose | 40 mg twice daily | If needed |
| Dose changes | 1 increase | As tolerated |
Prilosec vs. Pantoprazole Indications
Prilosec
Prilosec is FDA-approved to treat duodenal and gastric ulcers, erosive esophagitis caused by GERD, and symptomatic GERD itself. It's also approved for H. pylori eradication regimens and for rare acid-hypersecretion disorders like Zollinger-Ellison syndrome.
Duodenal and gastric ulcer treatment
Erosive esophagitis from GERD, plus maintenance of healing
Symptomatic GERD
Pantoprazole
Pantoprazole is FDA-approved for short-term treatment of erosive esophagitis caused by GERD and for maintaining healing afterward. It's also approved for hypersecretory conditions such as Zollinger-Ellison syndrome, but it isn't approved for treating ulcers or H. pylori infection.
Short-term erosive esophagitis treatment
Maintenance of erosive esophagitis healing
Zollinger-Ellison syndrome and other hypersecretory conditions
Prilosec vs. Pantoprazole Pros and Cons
Prilosec
Prilosec covers a wider range of FDA-approved uses than pantoprazole, including ulcer treatment and H. pylori therapy, and it's the only one of the two sold over the counter. Both drugs carry similar long-term risks like bone fracture and vitamin deficiencies with prolonged use.
Pros
Approved for peptic ulcers and H. pylori eradication, not just GERD and esophagitis
Available over the counter for short-term heartburn relief, not just by prescription
More dose strengths (20 mg to 120 mg), giving flexibility for severe hypersecretory conditions
Cons
No IV formulation, so it isn't an option for patients who cannot take oral medication
H. pylori regimen requires twice-daily dosing combined with antibiotics for 10 days
Dose adjustment recommended for Asian patients on long-term maintenance therapy
Pantoprazole
Pantoprazole's FDA approval is narrower, mainly covering erosive esophagitis and hypersecretory conditions, but it offers an IV option and pediatric approval that Prilosec's labeling doesn't include. Like Prilosec, it carries long-term risks such as bone fracture and vitamin deficiencies with extended use.
Pros
Available as an IV injection for hospitalized patients or those who cannot take oral medication
FDA-approved for pediatric patients age 5 and older with erosive esophagitis
Offers a twice-daily maintenance option for patients needing more symptom control
Cons
Not FDA-approved for duodenal or gastric ulcers, or for H. pylori eradication therapy
Available by prescription only, with no over-the-counter version
Higher reported rates of headache and diarrhea in clinical trials than omeprazole
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