eleven patients with bronchial asthma and 10 with chronic bronchitis were treated over four consecutive 3-day periods , firstly with aerosols either of ipratropium bromide ( 40 microgram four times a day ) or of salbutamol ( 200 microgram four times daily ) by random allocation , then the alternate drug , next by both drugs together , and finally with prednisolone ( 10 mg three times daily ) in addition to both drugs .
C0004096
bronchial asthma
C0001927
salbutamol