<P> The original Coca - Cola Zero logo generally featured the Coca - Cola logo in red script with white trim, with the word "zero" underneath in lower case in the geometric typeface Avenir (or a customized version of it). These words appeared on a black background . Some details varied from country to country . Later packagings swapped the colors of the "Coca - Cola" script and "Zero", leaving the former in white and the latter in red . </P> <P> The Coca - Cola Zero Sugar logo features the Coca - Cola logo in white script, with the words "zero sugar" in black underneath . The word "zero" is in lower case in the geometric typeface Avenir (or a customized version of it); the word "sugar" is in upper case . These words appear in a red disc on a black background . </P> <P> All versions of Coca - Cola Zero Sugar sold in various countries are based on the same flavoring formula, and all are carbonated . One liter of Coca - Cola Zero contains 96 mg caffeine . Additionally, artificial sweeteners are used . In the U.S., this includes aspartame and acesulfame potassium . However, the exact combination of sweeteners and preservatives used varies from market to market . </P> <P> Sodium cyclamate, a relatively inexpensive artificial sweetener banned by the U.S. Food and Drug Administration (FDA) since 1969 and once believed to be a carcinogen, has been used in the Coca - Cola Zero versions produced in Germany, Italy, Spain, Portugal, Venezuela, Chile, and some Central American countries . It was used for a time in Mexico, before a consumer campaign led to its removal from the drink in 2008 . In June 2009, Venezuela ordered Coca - Cola to withdraw its Coca - Cola Zero product, as it contained more than the legal levels of sodium cyclamate . </P>

What do they use to sweeten coke zero
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