Ok, so I was looking at the side of a Coke Zero can and it says there is nothing in it... So, where does the taste come from? And why does it make me nautious and give me headaches? Tried it a couple of times and don't drink it anymore. Doesn't work for me. I figure that I am asperthame intolerant. Some people say they can't taste it... I can even smell asperthame. Guess I'd better stick to water!