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Tell your doctor about all of your medical conditions and current medications before receiving nafcillin injection. Avoid this medication if you are allergic to penicillins or cephalosporins. You may experience serious side effects of nafcillin, including bloody or watery diarrhea, which requires prompt attention from your doctor. Do not attempt to treat this diarrhea before talking with your doctor. Do not stop taking this medication, even if you feel better, because your infection may not clear up entirely until the full course of treatment has been completed.
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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.