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Common knotgrass (Bianxu)
Pharmaceutical Name: Herba Polygoni avicularis
Botanical Name: Polygonum aviculare L.
Common Name: Polygonum, Common knotgrass
Source of Earliest Record: Shennong Bencao
Jing
Part Used & Method for Pharmaceutical
Preparations: The aerial parts of the plant
are gathered in summer and dried in the sun.
Properties & Taste: Bitter and slightly
cold
Meridian: Urinary bladder
Functions:
1. To promote water metabolism and regulate
abnormal urination;
2. To expel parasites and stop itching
Indications & Combinations:
1. Damp-heat in the urinary bladder manifested
as scanty urine with blood, painful urination,
urgency of micturition and frequent urination.
Common knotgrass (Bianxu) is used with Pink
(Qumai), Clematis stem (Mutong) and Talc (Huashi)
in the formula Bazhen San.
2. Eczema and trichomonas vaginalis. The
decoction of Common knotgrass (Bianxu) is
used externally for washing.
Dosage: 10-15 g |
