Cortex Phellodendri seeds Huang bai seeds
Chuan huangbo Tabular or shallowly channeled, varying in length and width, 3~6 mm thick. Outer surface yellowish-brown, even or longitudinally furrowed, some showing scars of lenticels, and remains of greyish-brown coarse bark, inner surface dark yellow or pale brown, with fine longitudinal ridges. Texture light and hard, fracture fibrous, showing lobelike layers, dark yellow. Odour, slight; taste, very bitter, viscous on chewing.
Guan huangbo 2~4 mm thick. Outer surface yellowish-green or pale brownish-yellow, relatively even, with irregular longitudinal fissures, scars of lenticels small and infrequently visible, occasionally remaining greyish-white coarse bark. Inner surface yellow of yellowish-brown. Texture light and relatively hard. Fracture bright yellow or yellowish-green.
To remove damp-heat, quench fire, counteract toxicity, and relieve consumptive fever.
Cortex Phellodendri(processed with salt) To nourish yin and reduce fire.
Dysentery, jaundice and morbid leucorrhea caused by damp-heat; urinary infectious; weakness and edema of legs; consumptive fever and night sweating; seminal emission; sores and skin infection with local redness and swelling; eczema with itching.
Cortex Phellodendri(processed with salt): Night sweating and consumptive fever due to exuberant fire secondary to deficiency of yin.
1.Reducing heat and resolving dampness:
For the treatment of dysentery due to damp-heat accompanied with fever and tenesmus, it is often combined with Radix Pulsatillae, Cortex Fraxini, etc.; for jaundice with fever due to damp-heat, with Fructus Gardeniae and others for recuding heat and resolving dampness; for yellow and thick leukorrhea due to damp-heat with Semen Euryales, Semen Ginkgo, etc.; for the treatment of the low extremities affected with hotness and pain due to the descending of damp-heat, with Rhizoma Atractylodis, Radix Achyranthis Bidentatae; for stranguria with hot sensation or painful urination with dark urine, with Fructus Gardeniae, Semen Plantaginis, etc.
2.Purging fire and eliminating virulent evil factors:
For the treatment of eczema and skin pyogenic infection due to virulent heat, it may be used internally or externally: for eczema, it can be used with Herba Schizonepetae, Radix Sophorae Flavescentis; for skin pyogenic infection, it can be used internally in combination with Rhizoma Coptidis, Fructus Gardeniae, etc. and used externally by mixing its powder with pig's bile.
For the treatment of hectic fever, nocturnal emmision, night sweating, due to deficiency of Yin leading to flare-up of fire, it is often combined with Rhizoma Anemarrhenae.