I dont see why not. Ive been having my water with the Cambridge Diet powders which makes it much easier to slip down than plain ol boring tap water and its not affected me at all, Im still in ketosis and still very smellybreathed!
Not wanting to dis LT at all but perhaps they sell the fibreclear to make a bit of profit? Mind you, my pharmacist gave both Barrie and I a free sample of Fibreclear so maybe Im being a bit harsh on good ol LT.