Sign Out
Orally, as a single daily dose, preferably on an empty stomach. Absorption may be reduced with food, but isoniazid may be taken with meals if gastrointestinal irritation occurs.
Treatment of Active Tuberculosis (in conjunction with other antitubercular agents): Adults: 5 mg/kg once daily (maximum 300 mg).
Children: 10 to 20 mg/kg once daily (maximum 300 mg). Therapy should be continued for 6 to 9 months, or longer.
Twice weekly dose (following 2 months of daily dosing): Adults: 15 mg/kg (maximum 900 mg).
Children: 20 to 40 mg/kg (maximum 900 mg).
Prophylaxis of Tuberculosis: for 6 to 12 months: Adults: 300 mg once daily.
Children: 10 mg/kg once daily (maximum 300 mg).
