 In 1998, the "pepper" flavor soda category was a major part of the analysis supporting an antitrust case between Coca-Cola and Pepsi.Much of the soft drink industry in the United States stopped using sugar in the 1980s, in response to a series of price supports and import quotas introduced beginning in 1982 that increased the price of sugar above the global market price.As a result, most US soft drinks, including Dr Pepper, now use high fructose corn syrup instead of sugar.