[Antitussive expectorant and antiasthmatic actions of Cynanchum Komarovii Ai. Iljinski].

The water and ethanol extracts of Cynanchum Komaroviiu could obviously relieve the cough caused by the irritation of ammonia water in mice, increase secretion of the respiratory tract and promote expectoration. They could also alleviate the asthma induced by histamine and acetylcholine chloride in guinea pigs.