丹皮，中药名。为毛茛科植物牡丹干燥根皮。产于安徽、山东等地。秋季采挖根部，除去细根，剥取根皮，晒干。生用或炒用。《本草纲目》：“滋阴降火，解斑毒，利咽喉，通小便血滞。后人乃专以黄蘖治相火，不知丹皮之功更胜也。赤花者利，白花者补，人亦罕悟，宜分别之。”现代研究，所含牡丹酚及其以外的糖苷类成分均有抗炎作用；牡丹皮的甲醇提取物有抑制血小板作用；牡丹酚有镇静、降温、解热、镇痛、解痉等中枢抑制作用及抗动脉粥样硬化、利尿、抗溃疡等作用。
      
    宜阳丹皮根粗、肉厚、色白、粉足，药用效能好，完全达到国家药典标准。1 9 6 8 年，河南省医药总公司把宜阳定为丹皮重点发展县。1 9 8 4 年，国家医药总局又把宜阳丹皮列为国家医药科研保密项目，不经国家医药局批准，不准出口。


 

Yiyang Tree Peony Bark

   
    Tree Peony Bark is dried root bark of peony trees which belong to Ranunculaceae. In autumn, dig out its root, relieve small root branches, pick off its skin, dry them in the sun then we can get this medical material. It can be used raw or fried. Yiyang Tree Peony Bark has thick root and meet, white color, enough pollen and good curative effects. According to modern medical researches, paeonol it contains has anti-inflammatory, calming people, cooling, antipyretic, analgesia as well as anti-atherosclerosis, diuresis, resisting ulcer and other functions. In 1984, it was listed as a national medicine-research secret project by the State Medicine Administration.