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Most Commonly Used

Omeprazole 40mg DR Cap
Glenmark Pharmaceuticals
Pill Identification: G232 G 
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Omeprazole 20mg DR Cap
Dr. Reddy's Laboratories, Inc.
Pill Identification: OMEPRAZOLE 20 mg R 158 
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Omeprazole 20mg DR Cap
Sandoz Inc. a Novartis Company
Pill Identification: OME 20 OME 20 
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Omeprazole 40mg DR Cap
Sandoz Inc. a Novartis Company
Pill Identification: OME 40 OME 40 
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Omeprazole 10mg DR Cap
Sandoz Inc. a Novartis Company
Pill Identification: OME 10 OME 10 
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Also See:

  • Answers to Frequently-Asked Questions (FAQs)
  • Other Class Related Drugs
  • Additional Patient Usage Statistics

Common Side Effects of Omeprazole
Omeprazole can cause side effects. Tell your doctor immediately if you have watery stools or severe diarrhea. This may be caused by a serious infection.

Also tell your doctor right away if you have:
  • Trouble swallowing food
  • Sudden and severe nausea, stomach pain, or vomiting
  • Weight loss
  • Vomit blood, see blood in your stools, or have dark tarry stools
  • Light-headedness and dizziness
  • Shortness of breath and wheezing
  • Trouble breathing
  • Unexplained weight loss
Your risk for broken bones in your hip, spine, or wrist may increase while taking omeprazole. The risk increases if you are older than 50, take high doses of omeprazole, or take it for more than a year. Talk with your doctor about your risk of having bone fractures while taking omeprazole.

Contact your doctor immediately if, while taking omeprazole, you have side effects including:
  • Fast, slow, or uneven heartbeat
  • Seizures or tremors (shakiness)
  • Abnormal or fast heartbeat
  • Feeling jittery, muscle weakness, spasms, cramps, or muscle aches
  • Light-headedness, fainting, or dizziness
The most common side effects of omeprazole include:
  • Headache
  • Constipation, diarrhea, gas, or stomach pain
  • Nausea or vomiting
Tell your doctor if these side effects do not go away or get worse while taking omeprazole.