I am not sure on the official guidelines, but my CDC says if I am going to have a coke to make it Coke Zero, something about citric acid in the other versions. Saying that I think she would have a heart attack if I drank more than one.
I will just add that this is not all about being in ketosis, though. Some folks find that artificial sweeteners make them hungry. So try to tune in to how it makes you feel if you have some Coke Zero, okay - and knock it straight on the head if you think it's going to lead you astray!
My consultant doesn't allow me to have it at all. I know some CDC do though. As she said to me at the end of the day there is something that makes it black and something that makes it taste good so she says no to it. It is your choice though xx
From step 2, you are allowed diet soft drink every now and then but not every day. It's in the allowed list for fluids =) when i go down to step 1 i'm not going to have any fizzy drinks other then sparkling water x
Every time I've done this diet I've had Coke Zero. It keeps me going, doesn't affect my losses and doesn't make me hungry, BUT that is just me. Other people could be different and I can understand the arguments against it.
I only recently discovered Dr Pepper Zero has no citric acid in it either which has been bliss
The official line is now no fizzy drinks but it used to be allowed about 4 years ago! Your CDC will say no! I drink it and always have. Sometimes water is just too much water! However I make sure I always drink my minimum water first.
My CDC says I can have a can a day but only after my water. Unfortunately I struggle a lot with water as I hate the stuff. I'm lucky if I can manage a litre a day but still I drink coke zero. I'm trying to stop as I know the small amount of water mixed with a lot of coke zero is effecting my losses. So slowly but surely I'm weaning myself off it. I'm very much the sort of doing things to the extreme when it comes to food and drink - hence CD! So trying to break the cycle and starting with the coke zero lol.