Diet Coke
Diet Coke does not use a modified form of the Coca-Cola recipe, but instead an entirely different formula. The controversial New Coke, introduced in 1985, used a version of the Diet Coke recipe that contained high fructose corn syrup and had a slightly different balance of ingredients. In 2004, Coca-Cola introduced Coca-Cola C2, which it claims tastes much closer to Coca-Cola but contains half the carbohydrates. In 2005, the company introduced Coca-Cola Zero (replaced by "Coca-Cola Zero Sugar" in 2017), a sugar-free variation of regular Coca-Cola.
Coca-Cola Zero Sugar
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.