- change in the amount of urine
- easy bruising/bleeding
- signs of infection (e.g., fever, persistent sore throat)
- unexplained stiff neck
This drug may rarely cause serious (possibly fatal) liver disease. If you notice any of the following rare but very serious side effects, stop taking naproxen and tell your doctor immediately:
- yellowing eyes/skin
- dark urine
- unusual/extreme tiredness
- severe stomach/abdominal pain
- persistent nausea/vomiting
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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