Antitussive and Antiasthmatic Action of Wu-Hu-Tang

Abstract:

Freeze-dred powder of Wu-Hu-Tang markedly prolonged the latent period of cough induced by sulfur dioxide in mice,prolonged the latent period of cough and decreased the cough frequency induced by citric acid in guinea pigs,increased the secretion of phenol red from the airway and subairway in-mice,significantly prolonged the latent period of asthmatic attack by mixture of histamine-acetylcholine in guinea pigs.These results indicated the Wu-Hu-Tang had antitussive、antiasthmatic and phlegm-idissiped action.