I have had IBS for 8 years now, w/B,C,D,G &P. And only a little relief with Bentyl. Probiotics are wonderful to me. I found that taking them before I eat helps with the overall process of food moving through my intestines. Some people say antibiotics help them but they make me worse. I am also taking a supplement called "colon green" it includes lactobaccilus(probiotic) along with psyllium to help keep you "regular." And it contains no: yeast, sugar, starch, salt, wheat, corn, soy, dairy products, artificial preservatives or coloring. I am thoroughly enjoying having regular BMs and eating anything without the pain... and I have only been taking this stuff for a week! (the only draw back is that I am taking about 8 pills a day)By th way;Acidophilus is a form of good intestinal bacteria, responsible for helping to maintain the normal functions of the digestive tract. It helps to destroy the gas forming, disease and odor producing bacteria, and help keep yeast (candida) in check. Digestants are specially designed products formulated to help lessen the effects of poor or inadequate digestion. Besides causing discomfort, improper digestion can cheat your body out of the good nutrition your food and supplements are supposed to supply. I think in college I was prescribed too many antibiotics after being diagnosed with IBS.