Rhizoma Dryopteris Crassirhizomae


Rhizome with petiole base of Dryoptens crassirhizoma Nakai, family Dryopteridaceae and Blechnum orientale L., family Blechnaceae.

D. crassirhizomae: Rhizome obvate or longitudinally cut into two, 10-20 cm long, 5-8 cm broad, brown-yellow, stout. The base of the petiole flat-rounded, with scales and relic fibrous root. B. orientale: Rhizome linear, petiole base rounded, with relic fibrous roots. Its size and colour similar to the above-mentioned species. Bitter in taste, cold in nature, and attributive to liver and spleen channels.

1. Clear away heat and toxic material: For preventing and treating pestilence and seasonal febrile diseases, such as influenza, epidemic cerebrospinal mernngitis, mumps, measles, etc., also for viral pneumonia.
2. Cool the blood and stop bleeding: For profuse uterine bleeding due to blood-heat, hematemesis, epistaxis, hemafecia, eruptive diseases, etc.

Pharmacological Action
1. Antivirotic and bacteriostatic.
2. Parasiticidal effect on hookworm, roundworm and whipworm, etc. in human, and its component filmarone, on tapeworm.
3. Its decoction shortens the blood clotting time in rabbits.
4. Its extract exerts an abortive effect.

Administration Decoction: 6-15g.

Caution: D. Ctassirhizomae is poisonous and is contraindicated for pregnant women, aged, debilitated and those suffering from peptic ulcer.


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Mr. Wang Tao

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