Pepsi Max is low-calorie and sugar-free cola. The product has been
available outside the U.S. (the U.K., Italy, Ireland, France, the
Netherlands, and Australia, among other countries) for a number of
years, but was not introduced in the U.S. because one of it's
sweetening ingredients (acesulfame potassium) hadn't been approved by
the FDA. Although both Pepsi Max and Diet Pepsi use aspartame as
sweeteners, the acesulfame potassium in Pepsi Max is responsible for
what most people feel is a sweeter taste than aspartame-only sweetened
Although acesulfame potassium was approved by the FDA in 1998, Pepsi
Max is still not available in the U.S.A. Instead, Pepsi launched Pepsi
ONE in the U.S., which is also sweetened by acesulfame potassium, but
uses a slightly different recipe. In 2005, Pepsi ONE was changed,
using sucralose instead of aspartame.
For more information about Pepsi Max, see "Pepsi Max:"
http://en.wikipedia.org/wiki/Pepsi_Max and "Pepsi:"