Reply #24: There's a reason for that. Wierd ingredients.

[Judi Lynn]

Coke Zero Ingredients
Coke's marketing people talk about "zero consequences", but can they promise Coke Zero's ingredients are without consequences?

The ingredients (as written in bold) are listed on Australian cans of Coke Zero. Water anyone?

Carbonated water
Colour (150d) - aka "Sulphite Ammonia Caramel"
Food acid 338 - aka "Phosphoric Acid" (Also used for rust removal!)
Food acid 331 - aka "Sodium Citrates" (Also used in photography and as an anticoagulant of blood stored for transfusion!)
Flavour
Sweetener 951 - aka "Asapartame" (According to the US FDA, "the currently is studying aspartame and other dietary factors as part of a larger study of adult brain cancer." You might want to wait for the results before you drink it. Also, avoid this one if you're moody!)
Sweetener 950 - aka "Acesulfame Potassium" (Looking for reasons to avoid this sweetener? Look no further...)
Preservative 211 - aka "Sodium Benzoate" (Undiluted this stuff isn't too bad... Just don't let it touch your skin!)
Caffeine

http://www.thezeromovement.org/coke_zero_ingredients.html