For previously untreated uncomplicated pulmonary tuberculosis together with Freerksen we can offer a ‘new standard therapy’: 10 mg/kg body wt. Rifampicin in association with 5–8 mg/kg body wt. isoniazid and 20–25 mg/kg body wt. ethambutol. This ‘new standard therapy’ leads to elimination of tubercle bacilli from sputum in all previously untreated patients. In cases of insufficient inhibitory serum concentrations streptomycin can be administered additionally. This intensive initial chemotherapy shortens the duration of treatment, which always gas to be in conformity with the individual development of t