Oriental Arborvitae Leafytwigs

This herb mainly contains volatile oil, the principal components of which are α-thujone, thujaplicin, fenchone, etc. It also contains bicca flavones and fatty acids, etc.

The decoction significantly shortens coagulation time; inhibits Staphylococcus aureus, catarrhal coccus, dysentery bacillus, beta-hemolytic streptococcus, etc.; also inhibits human-type Mycobacterium tuberculosis and influenza and herpes viruses. The decoction, alcohol extract, and flavonoid extract of Chinese Arborvitae Leaf all have antitussive, expectorant, and antiasthmatic effects. The water-extracted alcohol-precipitated preparation lowers blood pressure in cats.

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