Drugs Home > Omeprazole 40 mg Capsules

Omeprazole (Prilosec®) is a medication commonly used for the treatment of duodenal and gastric ulcers, gastroesophageal reflux disease (GERD), H. pylori infections, and pathological hypersecretory conditions.
An over-the-counter (OTC) version is also available to treat frequent heartburn. Nonprescription omeprazole comes in a 20-mg tablet strength.
The prescription version of this medication comes in the following strengths:
  • Omeprazole 10 mg capsules
  • Omeprazole 20 mg capsules
  • Omeprazole 40 mg capsules
  • Omeprazole 2.5 mg packets for oral suspension
  • Omeprazole 10 mg packets for oral suspension.
For the treatment of gastric ulcers, it is generally recommended to take omeprazole 40 mg capsules for four to eight weeks (one tablet, once a day). For duodenal ulcers, the recommended dosage is 20 mg for four to eight weeks.
The recommended omeprazole dose for GERD is 20 mg once daily for up to four weeks. People with pathological hypersecretory conditions usually require higher omeprazole dosages (such as 60 mg once daily).
(Click Omeprazole Dosing to learn about dosing for children and to find out dosing recommendations for other conditions as well, such as for the treatment of erosive esophagitis and H. pylori infections.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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