Even though they are sugar-free, it would be best to stay away from them while on induction. This is the phase where you are trying to break your addiction to carbs and sweets and it will be more difficult if you are eating sweet things, even if they are sugar-free. Once you are past induction, you can give them a try, but be very conscious of the effect that they have on you (increased carb cravings, weight stalls, etc...). Good luck!