Proflexoral A perusal of each day energy reviewers' comments shows that many of these ibs patients fare better after they avoid the following. Dairy dairy is a commonplace ibs trigger for plenty humans. It contains lactose, one in every of five carbohydrates (at the side of fructose, fructans, galactans and sugar alcohols) singled out within the fodmaps (fermentable oligosaccharides, disaccharides, monosaccharides and polyols) food regimen.