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Seidlitz powders is the generic name under which a commonly known laxative and digestion regulator was marketed and sold by numerous manufacturers under names such as "Rexall Seidlitz Powders".〔(Picture of a Rexall 'Seidlitz powders' tin from the 1930s. ) Retrieved 20 April 2015〕 The three ingredients of Seidlitz powders (tartaric acid, potassium sodium tartrate and sodium bicarbonate) were manufactured by chemical factories from the late 19th-century onwards. The name 'Seidlitz powders' ultimately derives from the village of Sedlec in the Czech Republic. ''See also § Etymology below''. The municipality of Sedlec (somewhat confusingly) is also the source of 'Sedlitz bitter water' (''see also § Sedlitz water below''), a naturally-occurring spa mineral water which has an entirely different chemical composition and side-effects from Seidlitz powders: there is apparently no connection between the two products except the name.〔The chemical composition of Sedlitz water is shown in 〕 ==Composition and use== The powders were often packaged in a small envelope containing two coloured paper wraps, one white and one blue. The white packets contained tartaric acid, and the blue packets contained a mixture of 75% w/w Rochelle salt (potassium sodium tartrate) and 25% baking soda (sodium bicarbonate). The powdery contents of both packets were stirred or dissolved separately in water and then mixed, giving off carbon dioxide with a characteristic fizzing sound.〔(Why do Seidlitz Powders fizz? ), ''The Pittsburgh Press'' (PA), 13 July 1921〕 The drink was described as "a cooling, agreeable draught". After ingestion, the powder combines with gastric juices to develop cathartic intestinal gases which can be somewhat helpful in evacuating the users's bowels. However their use can also lead to unpleasant side effects, and can even be fatal〔(Epitaph of a woman who apparently died from Seidlitz powder )〕 in subjects with conditions such as hernia, bowel obstruction or other ailments. 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「Seidlitz powder」の詳細全文を読む スポンサード リンク
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