Joanne VLCDs have quite a lot of carbs in them, and you have been low carbing prior to starting Exante. The average VLCD provides 60g of carbs a day, 80g if you need four packs.
I tried to mix CD and Atkins, hoping to cut calories a bit and improve overall nutrition. Frankly this proved disastrous. I was absolutely starving hungry all day long and I was only on 2 packs a day and Induction-level carbs on regular food.
Maybe your body will adjust over time but I suspect it is the carb content that is stimulating your appetite x