<p>Ethambutol should not be used alone, in initial treatment or in retreatment. Ethambutol should be administered on a once every 24-hour basis only.&nbsp;Absorption&nbsp;is not significantly altered by administration with food. Therapy, in general, should be continued until bacteriological conversion has become permanent and maximal clinical improvement has occurred.<br />
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Ethambutol is not recommended for use in pediatric patients under thirteen years of age since safe conditions for use have not been established.<br />
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<strong>Initial Treatment</strong>:&nbsp;In patients who have not received previous antituberculous therapy, administer Ethambutol 15 mg/kg of body weight, as a single oral dose once every 24 hours. In the more recent studies, isoniazid has been administered concurrently in a single, daily, oral dose.<br />
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<strong>Retreatment</strong>:&nbsp;In patients who have received previous antituberculous therapy, administer Ethambutol 25 mg/kg of body weight, as a single oral dose once every 24 hours. Concurrently administer at least one other antituberculous drug to which the organisms have been demonstrated to be susceptible by appropriate&nbsp;in vitro&nbsp;tests. Suitable drugs usually consist of those not previously used in the treatment of the patient. After 60 days of Ethambutol administration, decrease the dose to 15 mg/kg of body weight, and administer as a single oral dose once every 24 hours.<br />
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During the period when a patient is on a daily dose of 25 mg/kg, monthly eye examinations are advised.<br />
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<strong>Renal Impairment:</strong>&nbsp;Dose adjustment may be needed as determined by blood levels of ethambutol.</p>

<p>Should be taken with food.</p>

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