in 8 asthmatic subjects , dose-response curves were determined to isocapnic hyperventilation of cold air 30 min after inhalation of chlorpheniramine maleate ( 18 mg nebulized during tidal breathing ) , 2 doses of atropine sulphate ( 3 mg and 18 mg nebulized ) , or placebo .
C0004096
asthmatic
C0596005
atropine sulphate