Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur:
- facial/muscle twitching
- signs of infection (e.g., severe tiredness, fever, persistent sore throat)
- seizures
- uncontrollable movements
- change in the amount of urine
Seek immediate medical attention if any of these rare but very serious side effects occur:
- high fever
- fast/irregular heartbeat
- muscle stiffness
- mental/mood changes
- difficulty breathing with exercise
- swollen legs/feet
- sudden weakness
- pain/redness/swelling of the arms/legs
- chest pain
- dark urine
- persistent nausea/vomiting
- stomach/abdominal pain
- yellowing of eyes/skin
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include:
- rash
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
Call your doctor for medical advice about side effects. In the US, you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088.
In Canada, you may report side effects to Health Canada at 1-866-234-2345.
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