Diet Coke Plus was a formulation of Diet Coke fortified with vitamins and minerals. It is sweetened with a blend of aspartame and acesulfame potassium.
The drink was released in the United Kingdom in October 2007, available in two variants, one with vitamins B3, B12, and vitamin C, and the other containing antioxidants with added green tea and vitamin C. Although Diet Coke Plus Antioxidants is labeled as sugar free, it actually contains 0.1 grams of sugar in the green tea powder per 100ml.