Digestion resistant Dextrin

Prebiotic

What is it

Digestion-resistant dextrin (often sold as resistant dextrin, NUTRIOSE, or resistant tapioca dextrin) is a soluble prebiotic fiber made by partial hydrolysis and chemical modification of starch, usually from wheat, corn, or tapioca.

Evidence for 2 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Bowel regularity

Strong Evidence

Multiple controlled trials show resistant dextrin improves stool consistency and frequency at modest doses with good tolerance.

Postprandial glucose

Good Evidence

Several human studies show modest reductions in postprandial glucose and insulin when resistant dextrin is consumed with meals.

How it works

Resistant dextrin passes through the small intestine largely intact because the bonds between its glucose units resist human digestive enzymes. In the colon it is fermented by gut bacteria, producing short-chain fatty acids such as butyrate that support colonic health. It also adds bulk to stool, slows gastric emptying, and modestly blunts the glycemic response to meals. Multiple human trials show benefits on bowel regularity, satiety, and postprandial glucose at intakes of around 10-15 g per day.

Dosage

DSLD does not list a single standardized dose. Studied doses are usually 10-15 g per day, with up to 45 g per day tested in some short-term trials. General fiber targets are 25-38 g per day.

When and how to take it

Easily added to drinks or meals. Splitting the dose across the day reduces any GI discomfort.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

Resistant wheat dextrin

Common form in fiber supplements and beverage mixes.

Highly soluble; low viscosity

Resistant tapioca dextrin

Preferred by gluten-sensitive consumers.

Similar properties, naturally gluten-free

Safety

Generally very well tolerated, with much less gas and bloating than inulin or FOS at equivalent doses. High doses may still cause mild GI symptoms in sensitive people.

Who should be cautious

People with severe IBS or motility disorders should titrate slowly. Wheat-based resistant dextrin is generally low in gluten but may not be suitable for strict celiac disease unless certified gluten-free.

Interactions

Fiber can slightly slow absorption of co-administered medications and minerals. No major drug interactions are reported.

Frequently asked questions

Will it cause gas like inulin?⌄

Most users tolerate resistant dextrin much better than inulin at equivalent doses, with less bloating and gas.

Is it gluten-free?⌄

Wheat-based products are extensively processed but may still contain traces. Tapioca-based versions are naturally gluten-free.

References

Digestion resistant Dextrin on Wikidata — Wikidata link

Digestion resistant Dextrin on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Digestion resistant Dextrin (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.