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"Zhang Bingcheng's formula takes the intent of Xuan Bi Tang, but reduces the formula to four herbs. This combination addresses joint swelling marked by Heat or redness, and is particularly useful for the knees. It can be used for heat bi patterns with pain, swelling, and stiffness, and also Wei patterns with numbness or weakness in the legs when due to Damp Heat. (Fratkin, Chinese Herbal Patent Medicines)" |
