Cortex Dictamni Radicis


Bark of Dictamnus dasycarpus Turcz., family Rutaceae.

Bark reel-shaped, 5-15 cm long, 1-2 cm in diameter, 0.2-0.5 cm thick. Outer cortex grey-white with longitudinal striae and granular spots; inner surface nearly white. Section lamellate, small bright spots seen through the light when the epidermis peeled off. Prepared as crosscut pieces or fine strips. With a foul smell. Bitter in taste, cold in nature, and attributive to spleen and stomach channels.

Clear away heat, expel wind and deprive dampness: For carbuncle and prurigo of dampness-heat type, scabies and tinea.

Pharmacological Action
1. Inhibiting the growth of pathogenic fungi.
2. Its infusion lowers vaccine-induced fever in rabbits.
3. Dictamnine, one of its active components, increases the myocardial tone of frogs.

Administration Decoction: 3-9g. Extemal use: Appropriate amount.


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Mr. Wang Tao

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