Hi Guys, I had it whilst on LT. Its fine honestly.....it has no cals, no fat, no carbs....its basically water!!!! LOL. It will not knock you out of ketosis as it has no citric acid in it......Garry is fantastic, he does things by the book, me I'm a rule breaker...I'll push things as far as I can. I honestly never had any problems and my weight loss was not affected...I'll be honest and admit I tried diet coke (as I was out and they had no coke zero) and my ketostix showed I was no longer in ketosis....it took a day to get back.
If you want to do the diet 100% as LT say then don't have it, but if like me you needed something then go for it.x