Hi Conners---- As you can see by the many replys that you have received on this, that everyones IBS is aggravated in many different ways. I have found in my case, that Caffiene is a no-no, and so is any carbonation of any kind. D city. Now there are some who can drink the colas all day long without any problems and some that can only drink decaf. but can tolerate the carbonation, and so on and so on. My point is, what may not aggravate your IBS, may aggravate the heck out of mine and vice-versa. It's an individual thing really, and you kinda just have to learn what's best for you by some trial and error. I drank diet pop for years, not knowing that it was the carbonation and the nutra sweet that was really reaking havoc on my belly. I had a cousin suggest that I give it up and go to nothing but water. I did, and my symptoms improved dramatically. I know that you'll find what works for you best, and I'm so glad that we've got these boards to come to. There's so much that we can learn from each others experiences.IBS is so complex, but never give up hope.lol, runnL8 ------------------"A man who has friends must himself be friendly, But there is a friend who sticks closer than a brother". (C/D-type)