File:Coptis japonica、5026696、黄蓮・丹波市立薬草薬樹公園.JPG

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English: Coptis japonica
日本語:黄蓮　丹波市立薬草薬樹公園
Date
Source 松岡明芳
Author 松岡明芳

オウレンとはキンポウゲ科の植物の一種。学名Coptis japonica。

北海道、本州、四国の山地の木陰に自生する多年生草本。薬用植物のため栽培もされる。花期は3～4月頃で小さな白い花を咲かせる。 

生薬 [編集]

本種、同属のC. chinensis、C. deltoidea、C. deltoideaの根をほとんど取り除いた根茎は黄連（オウレン）という生薬で、苦味健胃、整腸、止瀉等の作用がある。この生薬には抗菌作用、抗炎症作用等があるベルベリン（berberine）というアルカロイドが含まれている。

黄連湯、黄連解毒湯、三黄丸、三黄瀉心湯、温清飲などの漢方方剤に使われる。

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current16:41, 14 September 2010Thumbnail for version as of 16:41, 14 September 20101,280 × 960 (358 KB)松岡明芳 (talk | contribs){{Information |Description={{en|1=Coptis japonica}} {{ja|1=黄蓮　丹波市立薬草薬樹公園}} |Source=松岡明芳 |Author=松岡明芳 |Date=2010，5，26 |Permission= |other_versions= }} オウ�

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