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How soon after taking isoniazid will my symptoms improve?

If you have tuberculosis (TB) it is possible that you could start feeling better a few weeks after you start taking isoniazid. However, you must not stop taking this drug early. You will probably need to take this combination antibiotic for at least two months before switching to other drugs to fight the disease.

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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.