[Prescription Name]
Cang Zhu Huang Bai Wan
[Ingredients]
Cang Zhu, Huang Bai, Fang Ji, Nan Xing, Chuan Xiong, Bai Zhi, Xi Jiao, Bing Lang, equal amounts.
[Preparation Method]
Grind the above ingredients into powder and make pills with alcohol paste.
[Functions and Indications]
Treats athlete's foot, damp-heat accumulation, and phlegm flow.
[Usage and Dosage]
For blood deficiency, add Niu Xi and Gui Ban; for obese individuals, add phlegm-resolving herbs.
[Introduction to Medicinal Materials]
Chuan Xiong: Promotes blood circulation, relieves pain, and dispels wind. Used for chest pain, stabbing pain in the chest and sides, bruises, irregular menstruation, dysmenorrhea, abdominal pain due to masses, headache, and rheumatic pain.
Huang Bai: Clears heat and dries dampness, drains fire and eliminates toxins. Used for damp-heat diarrhea, jaundice, leukorrhea, hot urine, athlete's foot, bone-steaming and fatigue heat, night sweats, nocturnal emissions, and ulcerations with swelling and toxicity.
Cang Zhu: Dries dampness, strengthens the spleen, dispels wind, disperses cold, and improves vision. Used for dampness obstructing the middle burner, distension and fullness in the epigastrium, diarrhea, edema, foot paralysis, rheumatic pain, wind-cold common cold, night blindness, and blurred vision.
Bai Zhi: Main pharmacological effects include antipyretic, analgesic, anti-inflammatory, coronary artery dilation, antispasmodic, enhancement of uterine contraction, promotion of fat breakdown, antibacterial, antifungal, and anti-tuberculosis.
[Cang Zhu Identification]
(1) The powder of this herb is brown. Calcium oxalate crystals are small, ranging from 5 to 30μm in length, irregularly filling the thin-walled cells. Fibers are mostly in bundles, elongated fusiform, with a diameter of about 40μm, and a thick wall, lignified. Stone cells are abundant, sometimes connected with cork cells, polygonal, circular, or elongated rectangular, with a diameter of 20 to 80μm, and a very thick wall. Inulin is commonly seen, with a surface showing radial texture.
(2) Take 0.8g of the powder, add 10ml of methanol, sonicate for 15 minutes, filter, and take the filtrate as the test solution. Take 0.8g of the Cang Zhu reference herb, and prepare the reference herb solution in the same way. Take the Cang Zhu reference compound, add methanol to make a solution containing 0.2mg per 1ml, as the reference compound solution.
Perform thin-layer chromatography (Appendix VI B of the 2010 Pharmacopoeia) experiment. Take 6μl of the test solution, 6μl of the reference herb solution, and 2μl of the reference compound solution, and spot them on the same silica gel G thin-layer plate. Use petroleum ether (60-90℃)-acetone (9:2) as the developing agent, develop, take out, air dry, spray with 10% sulfuric acid ethanol solution, and heat until the spots show clear coloration. In the test solution chromatogram, at the corresponding positions to the reference herb chromatogram and the reference compound chromatogram, spots of the same color appear.
