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What should I know about isoniazid before taking it?

Before you take isoniazid you should know that it can cause serious liver damage. Your doctor will monitor your liver function while you take this drug, and you should alert your doctor right away if you notice symptoms of hepatitis (a liver disease), including nausea and vomiting, no appetite, yellowed skin or eyes or feeling weak, exhausted or generally unwell. In addition, isoniazid can cause vision problems. Get your eyes examined before you start taking this drug and then regularly while you are taking it.

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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.