Folium Rhododendri Daurici
Source
Leaf of Rhododendron dauricum L, family Ericaceae.
Characteristics
Leaf
nearly coriaceous, long-elliptical, 1.5-3.5 cm long, 1.0-1.5 cm broad;
blades obtuse at two ends, apex mucronate; dorsal surface densely covered
by scales. Bitter in taste, cold in nature, and attributive to lung channel.
Indication
Eliminate
phlegm, relieve cough and dyspnea: For acute and chronic bronchitis.
Pharmacological
Action
1. Its active component germacrone is an antitussive.
2. Farrerol, another active component, is an expectorant.
3. Its decoction or alcoholic extract inhibits the growth of Staphylococcus
albus and Pseudomonas aeruginosa in vitro.
Administration Decoction:15-30g.