Many soluble fiber supplements are not "the same fiber you eat without the food". Some soluble fibers are derived from unusual plants not commonly found in Western diets. For example Gum Arabic is a fermentable complex carbohydrate with prebiotic properties that is unique to the acacia shrub/tree. The gum is used as a food additive (E414) to stablize or thicken and as a soluble fiber supplement. The soluble fiber in gum arabic is not something people would encounter in their normal diet unless they eat processed foods, beverages or candies to which it has been added. It is not surprising as witnessed by reports on this board that some people may have problems with this soluble fiber supplement too.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS