Mountain Dew
Diet Mountain Dew is a no-calorie Mountain Dew that was first introduced in 1986. It was formerly known as "Sugar-Free Mountain Dew" until 1986, when it was given its current name. In 2006 Diet Mountain Dew was reformulated with a new "Tuned Up Taste", using a blend of sucralose, aspartame, and acesulfame potassium as sweeteners. The previous formulation was sweetened exclusively with aspartame.