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

Most common
headache (up to 6.9%)
abdominal pain (up to 5.2%)
nausea (up to 4%)
diarrhea (up to 4%)

Pantoprazole

Most common
headache (up to 12.2%)
abdominal pain (up to 6.2%)
nausea (up to 7%)
diarrhea (up to 8.8%)

Prilosec vs. Pantoprazole Dosage

Prilosec

Dosage
Dosage Table
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

Dosage
Dosage Table
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

Common Symptoms and Related Diseases You Can Explore

Explore a range of common symptoms the Doctronic Symptom Checker can help you understand.