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is a pharmaceutical drug marketed in Japan, sold as a treatment of the digestive tract (especially as an antidiarrhoeal), whose main active ingredient is "wood creosote" (also wood-tar creosote, or beechwood creosote.) The name is nominally a registered trademark of based in Suita, Osaka which is still the major market-share holder, but the enforceability of the tradename has been voided by the Supreme Court of Japan, which ruled ''seirogan'' to be a common generic name. The ruling only recognizes proprietary use of the bugle logo by Taiko,〔, pp. 131-; discusses bugle as only recognized trademark; mentions a site that collected 26 different similar looking seirogan brand boxes; on p. 134 is a gallery of 20 different such boxes.〕 but not protection of its characteristic packaging. As a result, dozens of extremely similar packaged drugs are being manufactured and sold in the market.〔 == Overview == Seirogan is a general-use medicine, mainly to treat the gastro-intestinal system. It contains wood-tar creosote (木クレオソート) as its main active ingredient.〔.. 整腸薬・下痢止めの成分比較表〕 That ingredient in the West may otherwise go by such names as "wood creosote", "beechwood creosote", or "liquid pitch oil", and should be distinguished from industrial "coal-tar creosote". To emphasize the distinction, wood creosote in Japan is sometimes called by such names as and minor variants thereof. The wood creosote is blended with two or more recognized in for their antiseptic and other effects, but the additional ingredients used are differ among manufacturers (See under #Chemical composition for a sampling of formulas). Some quarters (perhaps kanpō medicine practitioners and others) insist however that "Seirogan is not strictly speaking kanpō medicine", and this point was emphatically printed in a retraction by a certain consumer-watch type book that criticized seirogan but had confused wood creosote with the industrial type〔. The retraction was in the magazine ''Shūkan Kinyobi'' issue 8/20/1999, special on ''Katte wa ikenai''; excerpt:"正露丸を「漢方薬」としましたが、漢方薬の成分である生薬は使われているものの、厳密には「漢方薬」ではありません。... 正露丸に使われているクレオソートはコールタールを原料とする日本工業規格クレオソート油ではなく、プナの木などから得られる乾留物を精製・蒸留して作る日本薬局方クレオソートでした。...(「回答企業にお応えします」より)〕 (See #accusation controversy). In the classic form, it is a dark brown round pill, but in order to mask its distinctive mediciny odor and bitterness, sugar-coated tablet forms have become available as well. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Seirogan」の詳細全文を読む スポンサード リンク
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