Table 2

Recommended dosages of standard antituberculosis drugs

Drug		Daily dosage				Intermittent dosage
		Children				Adults		Children		Adults
		Children				Weight	Dose	Children		Weight	Dose
Isoniazid	5 mg/kg^2-150	—	300 mg		15 mg/kg 3 times weekly	—	15 mg/kg 3 times weekly
Rifampicin	10 mg/kg	<50 kg	450 mg		15 mg/kg 3 times weekly	—	600–900 mg 3 times weekly
		⩾50 kg	600 mg
Pyrazinamide	35 mg/kg	<50 kg	1.5 g		50 mg/kg 3 times weekly	<50 kg	2.0 g
		⩾50 kg	2.0 g			⩾50 kg	2.5 g 3 times weekly
					75 mg/kg twice weekly	<50 kg	3.0 g
						⩾50 kg	3.5 g twice weekly
Ethambutol^2-160	15 mg/kg		15 mg/kg		30 mg/kg 3 times weekly		30 mg/kg 3 times weekly
					45 mg/kg twice weekly		45 mg/kg twice weekly

↵2-150 See text.
↵2-160 Accurate calculation is required to reduce the risk of toxicity (see under “Special precautions”).