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How should I take isoniazid?

You must take isoniazid exactly as directed by your doctor. The doctor will base the dose you take on your body weight. The dose will be taken once each day, every 24 hours. Make your best effort not to miss any doses, and do not stop taking it until your doctor tells you. Also, you should take isoniazid when your stomach is empty, at least one hour before or two hours after eating food, but with a full glass of water. Do not take antacids for an hour after you take isoniazid.

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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.