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Prilosec Side Effects Center

Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026

Prilosec (Omeprazole) side effects drug center

 

PROFESSIONAL

CONSUMER

SIDE EFFECTS

  • Overview
  • Consumer Information
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Prilosec Side Effects Center

What Is Prilosec?

Prilosec (omeprazole) is a proton pump inhibitor (PPI) used for the treatment of conditions such as ulcers, gastroesophageal reflux disease (GERD), and Zollinger-Ellison syndrome, which are all caused by stomach acid. Prilosec is available in generic form.

What Are Side Effects of Prilosec?

Side effects of Prilosec include:

  • headache,
  • nausea,