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Zaječická hořká (bitter water from Zajecice, administrative part of village Bečov, near Most Northern Bohemia) or Saidschitzer Bitter-wasser is strongly mineralized natural bitter water. Known since the 16th century for its purgative and gentle laxative effects. Rises from a wells located in the vicinity of Zaječice, Sedlec (part of Korozluky) and Korozluky. It ranks among strongly mineralized mineral waters of the Magnesium sulphate type; it is cool, hypertonic, slightly opalescent, yellowish, scent-free, with a strongly bitter flavour.
During the history of the area, bitter waters from Zajecice (Seidschitz), Sedlec (Sedlitz), Korozluky (Kollosoruk) and Bylany (Püllna) were exported to the whole world as the equivalent of Epsom salt products. Trademarks for different markets are: Zaječická hořká, Seidschitzcher bitter-wasser, Sedlitz bitterwasser, Sedlitz water, Püllna wasser, Pillnaer bitter wasser.
The salt obtained by evaporation were made into "Biliner digestive pastiles". Thanks to the well known curative effects of Zaječická and Sedlická water, end of the 19th century spread "Sedlitz powder" name for a laxative powder, which, however, had nothing to do with "Biliner digestive pastiles". So-called "Sedlitz powder", produced in different laboratories, had different chemical composition and side effects.
History of Zaječická hořká, Seidsitzcher Bitterwasser and SEDLITZ WATER
Zaječická bitter water was from 17 th century the House of Lobkowicz at the Spa Bílinská Kyselka in the nearby town Bilina. Water from wells was thickened by evaporation and then filled into glass bottles.
The first scientific description of the therapeutic effects of water comes from balneologists Josef von Löschner, Franz Ambrosius Reuss and August Emanuel von Reuss.