Coca Cola is a good example of one of many carbonated soft drinks that is distributed in more than two hundred countries. Its original intention was essentially patent medicine when it was invented by John Pemberton in late 19th century. Coca Cola was essentially a concentrate made from Coca leaf (cocaine) and kola nuts (caffeine), that was then distributed to be carbonated and redistributed. The incorporation of cola was removed in 1903, but it still contains the coca flavoring without the Cocaine. Coca Cola contains 46 mg of caffeine per 12 fluid oz.
The main ingredients of Coca Cola today are carbonated water, Sugar (sucrose or high-fructose corn syrup), Caffeine, Phosphoric Acid v. caramel (E150D), and undisclosed natural flavoring. A can of coke is 12 oz and contains 39 grams of carbs, 50 mg of sodium, 0 grams of fat, 0 grams of potassium and 140 calories.
Furthermore certain cases have been reported that the sugar replacement used in diet coke, if used in concentrated amounts can cause blindness due to methanol production in the body. Diet coke has also been known cause for cancer in the body.