Im not sure about slowing losses as its fat free, has almost no carbs and i thinks its like 1 calorie! I just bought the berry one on tuesday! Its actually quite nice, although i think the concentration they suggest is tooooooo sweet. lovely in sparkling water with ice mmmm
Yeah its 1 tsp in 1 litre - but i thought you could drink as much as you liked!
I have had the flavourings from day one as I hate plain water. My first weeks loss was 11lbs so it has not effected me at all. Of course different people may be carb sensitive. Hope you enjoy them it's so much easier to drink