Well, I'm not currently having it but I have done in the past. Litres a day, didn't knock me out of ketosis or affect my losses, but everyone is different
If it's really really important to you (and it was for me, I wouldn't have lasted any longer on CD without ) try it for a week and see how it is for you.
When there are so many 'safe' options its not worth the risk. As has been said Coke Zero is absolutely fine, so is Asdas own brand Diet coke. Anything with malic acid is ok. Citric acid is best avoided
Ive actually been converted. I was a diet cokeaholic too but I actually prefer Asdas now And its only about £1.70 for 4 2 litre bottles So I kinda like that too
I think if this diet teaches me only one thing, it's that I can go without diet coke! I was absolutely addicted and could easily drink 2 litres a day! It's quite shocking how drinking diet coke and being overweight seem to go hand in hand! Plus my teeth are super White now! Lol x