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.
Sugary drink tax
On June 5, 2017, Seattle's City Council voted 7-1 to pass a 1.75 cents per ounce tax on sugary drinks; the tax does not include diet soda drinks or fruit drinks and it started on January 1, 2018. After the tax was implemented, people were surprised that the tax made a case (24 cans) of Coke become $7.35 more expensive when compared to a case of Diet Coke or Coke Zero. The $15 million Seattle assumes will be collected from the tax will be used for programs that give access to more fruits and vegetables for low-income families, adding education programs and studying the tax on how it impacts behavior. Seattle collected $4 million in the first four months of the tax.