It did make me feel a little bit sick if I had too much of it, but then I would just take a little break and would feel fine again in a min.
I heard that some people feel absolutely fine, and some feel really sick, so I'm afraid it does depend on your personal body reaction. I'd say if you felt very sick before, you are likely to feel the same again... Sorry, I guess it's not very encouraging. Still worth a try though! xx