133. DIRECT ACTION OF DRUGS ON THE BRONCHI 



Drugs are listed alphabetically, using a well-known name. Inclusion of trade names is for informative purposes 

 only and in no way implies endorsement by The National Academy of Sciences- The National Research Council. For 

 all "effects" included in this table, there is reasonable evidence the drug in fact acted on the bronchial musculature. 

 Where there was evidence that an effect was mediated by the respiratory center or adrenal glands, it was excluded. 

 Drug actions influencing only anaphylactic or asthmatic bronchospasm, or other pathological states of the bronchi, 

 were also excluded. Concentrations of drugs are given in ng/ml for local action on isolated preparations, and doses 

 in mg/kg for drugs administered systemically. Parentheses in Columns D and F indicate action is slight, irregular, 

 or doubtful, and the original literature should be consulted. A = active, but action complex (original literature 

 should be consulted); C = constricts; D = dilates; I = inactive. 



III At pH 6. 



202 



