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 C2
Coca-Cola C2 (also referred to as Coke C2, C2 Cola, or simply C2) was a cola-flavored beverage introduced by The Coca-Cola Company first in Japan, then later on June 7, 2004 in the United States (and shortly thereafter, Canada), in response to the low-carbohydrate diet trend. This Coke product was marketed as having half the carbohydrates, sugars and calories compared to standard Coca-Cola. It contains aspartame, acesulfame potassium, and sucralose in addition to the high fructose corn syrup typically found in cola beverages distributed in America. Aside from the high fructose corn syrup, one 12-ounce can of Coca Cola C2 contains 19 mg of aspartame, 4 mg of sucralose and 19 mg of acesulfame potassium. The packaging design differs from other Coke products in that the logos are printed in black. For marketing on radio and television, and movie theaters the Queen song "I Want to Break Free" was used. When it was first introduced, though, The Rolling Stones song "You Can't Always Get What You Want" was used.