In some countries, Diet Pepsi is known as Pepsi Light. This is not to be confused with an earlier U.S. product of the same name which was essentially 1970s Diet Pepsi with lemon flavoring.
Although Diet Pepsi contains caffeine, another version is available without caffeine. Additional variations of Diet Pepsi have been introduced over the years, wherein other flavors (such as wild cherry, vanilla, lemon, and lime) have been added to the cola; their availability and brand identification vary by country.
Marketing
In the United States Diet Pepsi can be marketed as calorie-free as according to FDA guidelines, this means that the product contains fewer than five calories per serving. [link]),
In the United States a Diet Pepsi commercial features a Diet Pepsi Machine (simply called Machine) being drafted into the NFL by the 3-time Super Bowl champion New England Patriots. The machine cannot be tackled because of its size compared to the human players, therefore leading to many touchdown catches as a wide receiver. Other commercials feature Diet Pepsi (the can) as an entertainer, represented by "agent" Jay Mohr, in a music video produced by Diddy ("Brown and Bubbly"), and an action film featuring Jackie Chan (Diet Pepsi is replaced by a "stunt double", a rival Diet Coke can, which is squashed by the villains). Diet Pepsi (the can) has also been portrayed as a great poker player winning hand after hand against Poker Champs Daniel Negreanu, Phil Hellmuth, and Scotty Nguyen.
All forms of Diet Pepsi have been included in all of the Pepsi Stuff marketing programs in which consumers collect Pepsi Points to redeem for free merchandise.