in 12 adult asymptomatic , relatively stable adult asthmatics the protective effect of 3 doses ( 200 , 1,000 and 2,000 micrograms ) of ipratropium bromide against bronchospasm induced by an ultrasonic mist of distilled water was functionally ( sraw , fev1 ) assessed .
C0700580
ipratropium bromide
C0006266
bronchospasm