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Effervescent or carbon tablets are tablets which are designed to dissolve in water and release carbon dioxide. The carbon dioxide is generated by a reaction of a compound containing bicarbonate , such as sodium bicarbonate or magnesium bicarbonate , with an acid such as citric acid or tartaric acid .
Effervescent tablets are tablets which are designed to dissolve in water, and then release carbon dioxide. [21] [22] [23] Common ingredients include citric acid and sodium bicarbonate, which react when in contact with water to produce carbon dioxide. Effervescent antacids may also contain aspirin, [24] sodium carbonate, or tartaric acid. [25]
Alka-Seltzer is an effervescent antacid and pain reliever owned by Bayer since 1978. First marketed by the Dr. Miles Medicine Company of Elkhart, Indiana, United States, Alka-Seltzer contains three active ingredients: aspirin (acetylsalicylic acid or ASA), sodium bicarbonate, and anhydrous citric acid. [1]
Berocca is a brand of effervescent drink and vitamin tablets containing B vitamins and vitamin C, manufactured by Bayer. [citation needed] Berocca was originally established in Switzerland in 1969 by Roche, and is available in a number of countries worldwide. [citation needed]
In the laboratory, a common example of effervescence is seen if hydrochloric acid is added to a block of limestone. If a few pieces of marble or an antacid tablet are put in hydrochloric acid in a test tube fitted with a bung, effervescence of carbon dioxide can be witnessed. CaCO 3 + 2 HCl → CaCl 2 + H 2 O + CO 2 ↑
Eno was first marketed by James Crossley Eno (1827–1915). [4] Legend has it that his idea for the product arose while he was working at the pharmacy of an infirmary in Newcastle, Britain, with Dennis Embleton; Embleton often prescribed an effervescent drink made by mixing sodium bicarbonate and citric acid in water, and Eno adopted this beverage. [5]