My daughter and I both deal with some degree of IBS/IBD, and the best help I've found for it was modifying our diets and reading a lot of labels. We gear more for soluble fiber than insoluble fiber when possible, and luckily for us there's a lot of things in the grocery store today with added fiber that don't taste horrible. Some fruits/veggies are better tolerated when cooked than raw, some aren't tolerated well at all. I found this site to be a great help to us: http://www.helpforibs.com/diet/ Print the cheat sheet, it's a very handy item to have when you're at the store looking for stuff, too.
Adding on: I don't buy the supplements or teas. I do eat a good bit of yogurt (esp Fiber One and Activia). For the anise tea, I use a mesh ball that you can buy if you like loose tea leaves and anise from the herb/spice section at the grocery and make my own anise tea when I need it. Anything used for loose tea leaves or if you have a French press coffee maker can be used for it.
