Omeprazole may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Some side effects can be serious. If you experience any of these symptoms, call your doctor immediately, or get emergency medical help:
- swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
- difficulty breathing or swallowing
- irregular, fast, or pounding heartbeat
- excessive tiredness
- muscle spasms
- uncontrollable shaking of a part of the body
- diarrhea with watery stools
- stomach pain
People who take proton pump inhibitors such as omeprazole may be more likely to fracture their wrists, hips, or spine than people who do not take one of these medications. The risk is highest in people who take high doses of one of these medications or take them for one year or longer.
Some people who take omeprazole for a long time may develop weakening of the stomach lining.
Talk to your doctor about the risks of taking omeprazole.
Omeprazole may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.