I had to O.D. on gas-ex which only helps just a little bit.
I honestly don't know if there even is such a thing you can take for IBS, at least not over the counter. I used to take Pepto Bismol but that was actually worse because it would calm my stomach down for a few hours but then after it wore off, my stomach problems were twice as bad as before and then I was REALLY in trouble.
Is IBS a psychological "disease"?
Yep! I get irritable bowel syndrome so when I get really nervous, I immediately get stomach pains. It's quite embarrassing at times, too.
I have Irritable Bowel Syndrome normally, but it is WAY worse when I am nervous! Which makes me even more nervous...what if I have to go right before I have to get up and give the speech/sing in church/whatever it is I am nervous about.
I hate those loops, where the initial nervousness is what makes you have stomach pains, or in my case the bathroom issue, but those issues cause more nervousness and it loops. SO EVIL.