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 Raspberry
Coca-Cola Raspberry is a Coca-Cola drink with a raspberry flavor that was sold in New Zealand on a trial basis. A Diet Coke Raspberry version was also sold. Both were first introduced on June 1, 2005 and had been discontinued by the end of the year. In the summer of 2017, the drink was brought back in New Zealand for a limited release. It was reintroduced as a summer flavour in Australia. In August 2018 it also came as zero flavor in Finland and Norway. Launched as a coke zero flavour in the UK January 2019.