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What is zileuton?

Zileuton is the name of the active ingredient in a prescription drug called Zyflo. It inhibits the synthesis of leukotrienes, chemical mediators of the lung inflammation that characterizes asthma. Zileuton prevents airway problems and asthma attacks by keeping leukotrienes from forming, but does not treat ongoing attacks. It is available as an extended-release tablet and should be taken twice daily.

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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.