Does maltodextrin contain gluten?

No Short answer

No. Maltodextrin is gluten-free even when it is made from wheat: the starch is so heavily processed that the gluten protein is removed, and EU law exempts wheat-based maltodextrin from allergen labelling for that reason. People with coeliac disease can eat it.

Also appears on labels as: maltodextrine, wheat maltodextrin, corn maltodextrin, tapioca maltodextrin.

What maltodextrin is

Maltodextrin is a white powder made by breaking starch down with acids or enzymes into short chains of glucose. It is not sweet, dissolves instantly and adds bulk, so it turns up in sports drinks, instant soups, crisps, sweeteners, infant formula, protein powders and low-fat products where it replaces the mouthfeel of fat. In Europe it is most often made from wheat or maize; in the United States, from corn.

The word "malt" in the name has nothing to do with barley malt. It refers to maltose, the glucose pairs the starch is broken into.

Why wheat maltodextrin is still gluten-free

Gluten is a protein. Maltodextrin is made from the starch fraction of the grain, and the hydrolysis that turns starch into maltodextrin strips out what little protein comes along. Independent testing of wheat-based maltodextrin consistently finds gluten below the 20 mg/kg (20 ppm) limit that defines "gluten-free" in the EU, the UK and the US — typically well below 5 ppm, the limit of detection for most assays.

The European Food Safety Authority reviewed this in 2007 and concluded that wheat-based maltodextrins are "unlikely to cause a severe allergic reaction" in people with wheat allergy or coeliac disease. On that basis, Annex II of Regulation (EU) No 1169/2011 explicitly **exempts** "wheat-based maltodextrins" from the requirement to declare cereals containing gluten. The same exemption covers wheat-based glucose syrups and dextrose.

What that means on the label

• In the EU and UK, "maltodextrin" on an ingredients list does not have to say "wheat", and the product can still carry a gluten-free claim. Some manufacturers write "maltodextrin (from wheat)" voluntarily; that is not a gluten warning.
• In the US, maltodextrin is almost always corn-derived. If it were made from wheat, FALCPA would require "wheat" to be declared — but that flags wheat allergy, not coeliac disease, and the FDA still allows such products to be labelled gluten-free if they test under 20 ppm.
• Coeliac societies in the UK (Coeliac UK), Ireland and Australia all list maltodextrin as safe, whatever the source grain.

When to be careful anyway

Two situations are different from coeliac disease. A **wheat allergy** is a reaction to wheat proteins other than gluten, and although EFSA judged wheat maltodextrin unlikely to trigger it, some allergists advise highly sensitive patients to avoid wheat-derived versions — check with yours. And products containing maltodextrin can still contain gluten from other ingredients: a stock cube with maltodextrin *and* barley malt extract is not gluten-free because of the malt, not the maltodextrin. Read the whole list, or let a scanner do it.

Sources

• Regulation (EU) No 1169/2011, Annex II — substances causing allergies (wheat-based maltodextrin exemption)
• EFSA opinion on wheat-based maltodextrins, glucose syrups and dextrose (2007)
• Coeliac UK — Is maltodextrin gluten free?
• FDA — Gluten-free labeling of foods (21 CFR 101.91)

Information is sourced from public regulatory bodies (EFSA, FDA, WHO) and is for reference only. Always read the package and consult a healthcare professional for medical advice.