calculate rifampin dose by weight
The usual recommended dose of rifampin for treating tuberculosis in adults is 10 mg per kg of body weight (about 4.54 mg per lb) daily. For children, the usual recommended dosage is 10 to 20 mg per kg (about 4.54 to 9.09 mg per lb) daily. The maximum recommended dose in adults and children is rifampin 600 mg a day.