I've suffered with IBS for over six years. About two months ago, I tried a herbal mix by Samra ( www.samra.com) called "Calm Colon" For over a month, I had few problems with my bowels. I ran out of the herb last week and my IBS started up again. Just thought I would mention this company for others. Their web site list a JAMA November 11, 1998 study showing a 72% success rate.