Zhong Yao Cai. 1999 Aug; 22(8): 411-3.

[Pharmacological study on asthma-relieving decoction (dingchuan tang) treating asthma]

Li Z, Li T.

Guangzhou University of Traditional Chinese Medicine, 510407.

Asthma-relieving decoction (Dingchuan tang) is a famous prescription of treating asthma, but its pharmacology has been not reported. This experiment showed that Asthma-relieving decoction (Dingchuan tang) can protect experimental asthma that blending of histamine and acetylcholine caused (P < 0.05 [symbol: see text] P < 0.01), can resist external trachea smooth muscle's contracting that histamine caused (P < 0.01), and can promote secretion of phenol red of rat's respiratory tract (P < 0.01). Results indicated that Asthma-relieving decoction (Dingchuan tang) has significant effect of relieving asthma and expelling phlegm.