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.
Red Bull Simply Cola
Red Bull Simply Cola is flavored with plant extracts, including galangal, vanilla, mustard seed, lime, kola nut, cocoa, liquorice, cinnamon, lemon, ginger, coca leaf, orange, corn mint, pine, cardamom, mace, clove, and lemon juice concentrate. It also contains caffeine from coffee beans; at 45 milligrams per 355ml (12-ounce) can, the caffeine level is regulated by the FDA, it contains more than Coca-Cola (34 mg) or Pepsi-Cola (37.5 mg), but less than Diet Coke (47 mg) or Mountain Dew (54 mg). The cola contains significantly less caffeine than Red Bull's eponymous energy drink (80 mg per 250 mL). The drink contains sugar and caramel color and lacks the phosphoric acid and high fructose corn syrup used in some other colas.