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 |
| art Used & Method for Pharmaceutical Preparations: | The aerial parts of the plant are gathered in summer and dried in the sun. |
| Properties and Taste: | Bitter and slightly cold |
| Meridian: | Urinary bladder |
| Functions: | To promote water metabolism and regulate abnormal urination To expel parasites and stop itching |
| Indications and Combinations: | 1. Damp-heat in the urinary bladder manifested as scanty urine with blood, painful urination, urgency of micturition and frequent urination. *Use with Pink (Qumai), Clematis stem (Mutong) and Talc (Huashi) in the formula Bazhen San. 2. Eczema and trichomonas vaginalis. *The decoction is used externally for washing. |
| Dosage: | 10-15 g |