Hi ladies, no you can't have gaviscon, chewing gum or mints before your GTT. You are allowed to clean your teeth and that's about it and drink water. I am dreading it, I can't stomach lucozade at the best of times. Let alone being pregnant and the thought of having to drink 500mls of the stuff, that I have to provide myself, is making me nervous. It depends where you live. It's not common practice here but my Bmi is 30 and I've had two big babies so mw referred me this time xxx