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Dabuyin Wan (simplified Chinese: 大补阴丸; traditional Chinese: 大補陰丸) is a dark brownish-black water-honeyed pill used in Traditional Chinese medicine to "nourish yin and to lower fire". It is used in cases where there is "deficiency of yin accompanied with flaming-up of evil fire manifested by daily recurring fever, night sweating, cough, hemoptysis, tinnitus and seminal emission". It tastes bitter, slightly sweet and astringent.
State Pharmacopoeia Commission of the PRC (2005). "Pharmacopoeia of The People's Republic of China (Volume I)". Chemical Industry Press. ISBN7-117-06982-1.