Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Digestive resistant dextrin (DRD), also known as resistant maltodextrin, is a type of soluble dietary fiber. Its use in supporting or managing symptoms of Irritable Bowel Syndrome (IBS) is based on emerging scientific evidence, rather than traditional use. Several clinical studies have explored the impact of resistant dextrin on bowel function, gut microbiota, and IBS symptoms. DRD is fermented by colonic bacteria, producing short-chain fatty acids that may help modulate gut health and improve stool consistency. Randomized controlled trials have shown that resistant dextrin can increase stool frequency and improve stool form in individuals with constipation, including those with IBS-C (constipation-predominant IBS). However, the evidence is moderate and somewhat inconsistent: some patients may experience increased bloating or gas, and not all studies show significant symptom improvement. A 2021 review in the journal Nutrients concluded that resistant dextrin may help regulate bowel movements and support overall gut health, but called for larger, high-quality studies specifically in IBS populations. Overall, DRD is considered safe and well-tolerated, which supports its use as a dietary supplement. However, its effectiveness for IBS symptom relief is rated moderately low due to variable individual responses and limited high-quality, IBS-specific research. Thus, while there is scientific rationale and some clinical support, the evidence is not robust.

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