Bian Xu Common Knotgrass Herb Herba Polygoni Avicularis
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Bian Xu (Herba Polygoni Avicularis)——Shen Nong Ben Cao Jing (Shen Nong’s Herbal)
The Processing of 萹蓄
The aerial part of annual herbaceous plant Polygonum aviculare L. of family Dolygonaceae.
Most areas in China.
Collected in summer.
The true smell and taste
No smell, slightly bitter.
Green, profuse leaves, tender, without impurity.
Sliced and unprocessed.
The Effect of 萹蓄
Bitter, slightly cold; bladder meridian entered.
Induce diuresis to treat stranguria, remove dampness.
It is good at clearing damp-heat in lower-energizer, and inducing diuresis to treat stranguria. It is usually indicated for urolithic stranguria and heat stranguria, such as with Mu Tong, Qu Mai and Che Qian Zi in Ba Zheng San from Tai Ping Hui Min He Ji J u Fang. For blood stranguria, it should be combined with blood-heat-clearing and bleeding-stopping herbs, such as Da Ji, Xiao Ji and Bai Mao Gen.
B. Eczema and vulvae pruritus, damp-heat jaundice
It has the action of removing damp-heat to relieve itching and is indicated for vulva pruritus and eczema, damp-sore due to damp-heat accumulation in lower-energizer. It could be used singly or decocted with Di Fu Zi, She Chuang Zi and Jing Jie, etc., for external washing. It is also indicated for jaundice of damp-heat type with its action of clearing damp-heat. It should be combined with the dampness-drying and jaundice-treating herbs such as Yin Chen Hao and Zhi Zi, etc.
Dosage and Administrations
Decoct 9~15g. Double the dosage when use the raw one. Proper dosage is for external application.
This bulk herb Bian Xu 萹蓄 Common Knotgrass Herb Herba Polygoni Avicularis is of premium quality. Our bulk Chinese herbs are mostly wild harvested but some herbs are farm grown to protect their natural habitats and meet incremental market demands. The harvests of right species at proper maturity are identified by experienced professionals, cleaned, cut or sliced, and dried. Cases, special processing methods such as soaking with rice wine, steaming, roasting are applied as mandated by traditional Chinese medicine traditions to prepare the Chinese herbs to achieve desired properties, enhance efficacy, and reduce toxicity.
In the course of formulas to enhance each other's desirable action and to minimize any potential side effect. In TCM, Chinese herbs are mostly combined in the context of formulas to enhance each other's desirable action and to minimize any potential side effect.