I had a fundo about 8 months ago, but I've also had IBS since I was a kid.
I can usually do a pretty good job of controlling it through diet. If I keep to a healthy diet of fruits/veggies/lean meats, I have very little trouble with my IBS. If I eat a big cheeseburger or something, I know I'm in for some trouble.
Since diet works for me, I don't really take any medications regularly for IBS. If you are having abdominal cramping, a common IBS symptom, then hyoscyamine is a good med for that. I always keep some on hand. They are small dissolving tablets that work well for me relieving cramping pain.
Learn lots. Don't judge. Laugh for no reason. Be nice. Seek happiness.