Omeprazole (Oral Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

• Back, leg, or stomach pain
• Bleeding or crusting sores on the lips
• Blisters
• Bloody or cloudy urine
• Chills
• Continuing ulcers or sores in the mouth
• Difficult, burning, or painful urination
• Fever
• Frequent urge to urinate
• General feeling of discomfort or illness
• Joint pain
• Loss of appetite
• Muscle aches or cramps
• Pain
• Red or irritated eyes
• Redness, tenderness, itching, burning, or peeling of the skin
• Skin rash or itching
• Sore throat
• Sores, ulcers, or white spots on the lips, in the mouth, or on the genitals
• Unusual bleeding or bruising
• Unusual tiredness or weakness

• Drowsiness
• Fast, racing, or uneven heartbeat
• Mood or mental changes
• Muscle spasms (tetany) or twitching seizures
• Nausea or vomiting
• Trembling

Get emergency help immediately if any of the following symptoms of overdose occur:

• Blurred vision
• Confusion
• Dryness of the mouth
• Flushing
• Headache
• Increased sweating

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Body aches or pain
• Chest pain
• Constipation
• Cough
• Diarrhea or loose stools
• Difficulty with breathing
• Dizziness
• Ear congestion
• Gas
• Heartburn
• Loss of voice
• Muscle pain
• Nasal congestion
• Runny nose
• Sneezing
• Unusual drowsiness

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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