Sorbitol is a sugar alcohol, and isomalto-oligosaccharide is a type of carbohydrate, both used here primarily as moisture-retaining agents to keep the bar soft. They also contribute to the bar's overall carbohydrate content and sweetness profile.
It's a known fact that some people can experience digestive sensitivity to sugar alcohols and certain carbohydrates, especially when consumed in larger quantities or if their system is not accustomed to them. Potential effects can include gas, bloating, or digestive discomfort.
If you have a known sensitivity to similar ingredients or follow diets like low-FODMAP, you may want to exercise caution. For most people, consuming one bar as a single serving is generally well-tolerated, but individual responses vary. As with any food containing non-traditional sweeteners or texture agents, it's wise to pay attention to your body's reaction, especially when trying it for the first time.