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What are the side effects of nafcillin injection?

You may have an allergic reaction to nafcillin. Symptoms of an allergic reaction, which requires immediate medical attention, include: swelling of the lips, tongue or face; closing of the throat; and hives. Promptly report the following serious side effects to your doctor: breathing problems; dark urine; discolored tongue; fever or chills; swelling or rapid weight gain; redness, blistering, peeling or loosening of the skin, including inside the mouth; severe skin rash, itching or peeling; feeling lightheaded or fainting; seizures; trouble passing urine or change in the amount of urine; unusual bleeding or bruising; watery or bloody diarrhea; muscle, joint pain or stomach pain; or unusual weakness or tiredness. Other side effects are generally minor, and your doctor may suggest ways to alleviate them. They include: irritation at the site where you were injected; diarrhea; headaches; nausea; vomiting; thrush; pain, swelling, black or "hairy" tongue; vaginal itching or discharge; sore mouth; and stomach upset.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.