What are the side effects of nalidixic acid?

The following side effects associated with using nalidixic acid require prompt medical attention: blurred or decreased vision; burning or tingling sensation; changes in color vision; convulsions; decrease in ability to sense pain, temperature, or body position; double vision; itching; numbness; pain, redness, or swelling of a tendon; seeing halos around lights; and weakness. If you experience an allergic reaction characterized by difficulty breathing, facial swelling, itchy rash, or hives, seek emergency care. Other, more common side effects are generally minor and only require medical attention if they persist or worsen. These include diarrhea, dizziness, drowsiness, feeling of a whirling motion, headache, nausea, rash, stomach pain or discomfort, and vomiting.

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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.