date:Dec 18, 2012
Diet Pepsi is quietly changing its sweetener ahead of a major rebranding of the soft drink set for next month.
The change comes as PepsiCo (PEP) looks to reinvigorate its namesake brands after losing market share to Coca-Cola in recent years.
Cans of Diet Pepsi around the country now list a mix of two artificial sweeteners, a pairing commonly found in newer diet sodas. Previously, Diet Pepsi used only aspartame, which is sensitive to heat and breaks down more easily.
This summer, PepsiCo decl