Fillers and stabilizers
Maltodextrin
Definition
What it is
Maltodextrin: highly processed starch derivative with a glycemic index of 95–136, higher than table sugar (65); feeds harmful gut bacteria such as E. coli and Salmonella in in vitro studies.
On the label
How it appears on labels
- maltodextrin
Regulation
Regulatory status
No bans or restrictions are recorded for this ingredient in the jurisdictions clearlabel tracks (US, EU, UK, Canada, Japan, Australia/NZ, Brazil).
Explainer
In plain language
Maltodextrin is a white powder made by breaking down starch, usually from corn, rice, potato, or wheat, into shorter chains of sugar. Food makers use it as a cheap filler, thickener, and carrier that spreads flavors and keeps powders free-flowing. It has almost no taste of its own, and despite the name it is not itself a sugar you would recognize on the tongue.
Assessment
Why it is flagged
Maltodextrin digests very quickly, and its glycemic index is often measured higher than table sugar, which means it can spike blood glucose sharply in people watching that response. Clear Label flags it partly as an ultra-processing marker, since it appears mostly in highly formulated products. Some laboratory studies have observed that maltodextrin can shift the behavior of gut bacteria and, in cell and animal models, has been associated with reduced intestinal defenses and effects on bacteria such as E. coli. These are in vitro and animal findings, not proof of harm in people eating normal amounts, and human evidence is limited. Clear Label surfaces it so users who track blood sugar or digestion can see how often it shows up and test their own patterns.
In the aisle
Where it commonly shows up
- Powdered drink mixes and sports drinks
- Sugar-free and low-fat snack foods
- Protein powders and meal-replacement shakes
- Instant soups, sauces, and gravy mixes
- Artificial sweetener packets as a bulking agent
- Chips and seasoned snack coatings
- Candy and baked goods
Practical
Reading the label
Maltodextrin is listed by name on US and EU labels, so it does not hide behind other terms. It often appears in products marketed as sugar-free or low-fat, where it stands in for fat or bulks up a sweetener, so a sugar-free claim on the front is a common place to meet it.
Alternatives
If you want to avoid it
Some people who want to limit fast-digesting starches choose products with shorter ingredient lists or whole-food sources of the same texture. Comparing two similar products often reveals one that uses a simpler thickener like tapioca or none at all.
FAQ
Common questions
Is maltodextrin worse than sugar for blood glucose?
Its glycemic index is often measured higher than table sugar, so gram for gram it can raise blood glucose faster in people sensitive to that. The amount in a given product matters, so logging your own response is the honest way to see if it affects you.
Is maltodextrin gluten-free?
Maltodextrin is usually made from corn, rice, or potato and is generally considered gluten-free even when derived from wheat, because processing removes protein. People who are highly sensitive often check for a labeled source or a gluten-free claim.
Why is maltodextrin in sugar-free products?
It adds bulk, texture, and carrier function without tasting sweet, which is useful when a high-intensity sweetener replaces sugar. That is why you often find it alongside sweeteners like sucralose or stevia.
Citations
Sources
Citation
Primary reference
About this page: the definition, label names, severity, and regulatory chips come from the clearlabel ingredient taxonomy, the same data the scanner uses to score products. Research summaries describe associations reported in published studies, not diagnoses; individual responses vary. Scan any product with clearlabel to see which of its ingredients carry flags.