Wuzi Yanzong Wan () is a deep brown pill used in traditional Chinese medicine to "replenish the kidney with vital essence".State Pharmacopoeia Commission of the PRC (2005). "Pharmacopoeia of The People's Republic of China (Volume I)". Chemical Industry Press. . It tastes sweet, sour and slightly bitter. It is used where there is "deficiency syndrome of the kidney marked by backache, dribbling of urine after micturition, seminal emission, premature ejaculation, impotence and sterility". The binding agent of the pill is honey.
Chinese classic herbal formula NameChinese (S)GramsFructus Lycii枸杞子 400 Semen Cuscutae (stir-baked) 大豆菟丝子 (炒) 400 Fructus Rubi覆盆子 200 Fructus Schisandrae Chinensis seu Fructus Schisandrae Sphenantherae (steamed) 五味子 (蒸) 50 Semen Plantaginis (stir-baked with salt) 车前子 (盐炙) 100
See also Chinese classic herbal formula Bu Zhong Yi Qi Wan
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