"The new Coke Zero formula tastes as if it has too much carbonation. In tasting a new bottle, the new formula burned my taste buds and left my tongue hurting for days. Anything I tried to eat or drink caused great pain! Terribly disappointed in Coke! "

"Coke...how could you do this to us Coke brand lovers AGAIN? You'd think you learned a lesson previously. Nope. The new red label Coke Zero Sugar is disgusting. I'll buy up all the black label I can. You had a winner but had to change it? Why? So unhappy. "

"The new Coke Zero is awful. The original version was very good, I hope Coke makes the original formula available again. Pepsi Zero is much better than the terrible new Coke Zero formula. I will buy Pepsi Zero if the original version of Coke Zero is not sold."