I used Symlin too for a month. It was horrible. Its supposed to suppress your appetite so the nausea to be expected. It kicks in so you don't eat too much. The problem is, if you bolus for a certain amount and then you don't eat that amount you have a terrible low to deal with. Not only that, but It would work against me later. I would be so hungry later on. I hated it. I was mostly very worried about the lows that many people warned me about. In all reality, I don't think I gave it much of a chance. I ended up going on Invokana and that worked so much better for me.