137. AEROSOLS. GASES. AND VAPORS ACTING ON THE BRONCHI 



The classification employed is functional, with the drugs listed alphabetically within each Part. 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. Similarly, results obtained in protecting guinea pigs against lethal doses of 

 histamine were excluded, unless there was evidence of the relief of the bronchospasm. Drug actions influencing 

 anaphylactic or asthmatic bronchospasm. or other pathological states, were also excluded. Concentrations for 

 aerosols, unless otherwise specified, are mg/ml of the solution from which the aerosol was formed. Parentheses 

 in Columns E (Part I) and D (Parts II and III) indicate action is slight, irregular, or doubtful, and the original 

 literature should be consulted. C = constricts. D= dilates, I = inactive. 



Part I: DIRECT ACTION 



HI See Headnole. /2/ |ig/L of vaporized aerosol. 



250 



