Ketotifen (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 as soon as possible if any of the following side effects occur:

• Chills
• Cough
• Diarrhea
• Fever
• General feeling of discomfort or illness
• Headache
• Joint pain
• Loss of appetite
• Muscle aches and pains
• Nausea
• Runny nose
• Shivering
• Sore throat
• Sweating
• Trouble sleeping
• Unusual tiredness or weakness
• Vomiting

• Abdominal or stomach pain
• Blistering, itching, peeling, or redness of skin
• Bloody or cloudy urine
• Clay-colored stools
• Convulsions
• Dark urine
• Difficult, burning, or painful urination
• Dizziness
• Frequent urge to urinate
• Muscle spasm or jerking of all extremities
• Rash
• Sudden loss of consciousness
• Unpleasant breath odor
• Vomiting of blood
• Yellow eyes or skin

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

• Blurred vision
• Confusion
• Convulsions
• Disorientation
• Dizziness
• Drowsiness (severe)
• Faintness or lightheadedness when getting up from a lying or sitting position
• Fast, pounding, or irregular heartbeat or pulse
• Hyperexcitability
• Loss of consciousness
• Palpitations
• Sweating
• Unusual tiredness or weakness

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:

• Weight gain

• Bloody nose
• Drowsiness
• Dryness of mouth
• Excitation
• Increased appetite
• Irritability
• Nervousness
• Swelling of eyelids
• Unexplained nosebleeds

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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