Is maltodextrin worse than sugar?

It is digested at least as fast and often faster, so on blood-glucose response it is not an improvement. On everything else the comparison is not well enough studied to rank them.

Is maltodextrin gluten free?

Maltodextrin from corn, rice, potato or tapioca contains no gluten. The wheat-derived kind is processed to the point that it is generally treated as gluten-free, but anyone with coeliac disease should check the label and the manufacturer.

Why is maltodextrin in protein powder?

As a carrier and bulking agent — it makes the powder mix, keeps it from clumping, and adds volume cheaply. It also adds carbohydrate that the front of the tub does not usually advertise.

Answer

What is maltodextrin?

Short answer

Maltodextrin is a carbohydrate made by partially breaking down starch, usually from corn, rice, potato, tapioca or wheat. Its chains are longer than a sugar molecule, so US labelling does not count it toward total sugars, yet it is rapidly digested and commonly measured with a glycemic index at or above that of table sugar.

Why it is in so many products

Maltodextrin is cheap, nearly tasteless, dissolves easily and carries other ingredients well. That combination makes it the default filler in powdered products — sweetener sachets, protein powders, seasoning blends, instant soups, sports drinks — and a bulking agent in low-fat and reduced-sugar formulations.

Its presence is often a consequence of removing something else. A product that takes out fat or sugar has to replace the bulk those provided, and maltodextrin is the usual replacement.

Made by hydrolysing starch to a dextrose equivalent of roughly 3 to 20
Rapidly digested; commonly reported glycemic index near or above sucrose
Does not count toward 'Total Sugars' on a US label, but does count as carbohydrate
Wheat-derived maltodextrin is processed to the point that it is generally treated as gluten-free, though a coeliac reader should still check the label

The labelling point people actually search for

This is the reason the question gets asked so often: a product can advertise no added sugar and still deliver a fast carbohydrate load through maltodextrin. Nothing about that is illegal or hidden — it is on the ingredients list — but the sugar line on the nutrition panel will not show it.

The practical move is to read the ingredients rather than the front of the pack, and to treat maltodextrin near the top of the list as a signal about what the product is.

What our scanner does with it

Olive Detective treats maltodextrin as a marker of ultra-processing rather than as a hazard. It belongs to the group of industrial substances — hydrolysed protein, invert sugar, modified starch — that indicate a formulated product rather than a food with ingredients you would keep in a kitchen.

That is a statement about the product, not a claim about what maltodextrin does to a person. The evidence on the latter is mostly rodent microbiome work, and it is not strong enough to say more.

Frequently asked questions

Is maltodextrin worse than sugar?: It is digested at least as fast and often faster, so on blood-glucose response it is not an improvement. On everything else the comparison is not well enough studied to rank them.
Is maltodextrin gluten free?: Maltodextrin from corn, rice, potato or tapioca contains no gluten. The wheat-derived kind is processed to the point that it is generally treated as gluten-free, but anyone with coeliac disease should check the label and the manufacturer.
Why is maltodextrin in protein powder?: As a carrier and bulking agent — it makes the powder mix, keeps it from clumping, and adds volume cheaply. It also adds carbohydrate that the front of the tub does not usually advertise.

Keep reading

Last updated 9 September 2026.

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