Ingredient · E421

Mannitol

Source
Not animal-derived
Allergen
No
Role in food
Mannitol is primarily used as a sugar substitute and bulking agent in sugar-free products. …

What is Mannitol?

Mannitol is a sugar alcohol, a type of carbohydrate. It occurs naturally in some plants, such as fruits and fungi, and can also be produced commercially through the hydrogenation of fructose or glucose. It is often found as a white crystalline powder.

Is Mannitol vegan?

Mannitol is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.

Is Mannitol gluten-free?

It does not contain gluten.

Is Mannitol a major allergen?

Mannitol is not one of the 14 major allergens that UK law requires to be emphasised on food labels.

What is Mannitol used for?

Mannitol is primarily used as a sugar substitute and bulking agent in sugar-free products.

Is Mannitol safe?

Mannitol is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations.

Why it's used

Mannitol is primarily used as a sugar substitute and bulking agent in sugar-free products. Its low calorie content and non-cariogenic properties make it suitable for chewing gum, sweets, and baked goods. It also acts as a humectant, helping to retain moisture in foods.

Health notes

Mannitol is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations. It has been evaluated by EFSA, which has established an acceptable daily intake (ADI) for it. Consuming large amounts of mannitol can have a laxative effect due to its osmotic properties, as it is not fully absorbed in the digestive system.

Regulatory status

Authorised in Great Britain (FSA register): England, Scotland, Wales. FSA register of authorised products

Permitted uses in the EU

Mannitol · legislation: 2025-2058

Food categoryMaximum level
13.1 foods for infants and young childrenNo numerical limit listed

Maximum levels are shown as published (mg/kg or mg/l, depending on the food). Some entries carry extra conditions and group authorisations are not listed here, so check the full entry before relying on a figure.

Substance is included in Group I, see also authorisation for Group I Substance is included in Group IV, see also authorisation for Group IV

Sources: Food Standards Agency (OGL v3); European Commission, Food Additives Database.

Allergen info

Mannitol is not one of the 14 major allergens that UK law requires to be emphasised on food labels. It does not contain gluten.

Foods that contain Mannitol

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Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.

Last updated: 17 October 2026

Note: This site presents label data from Open Food Facts for general information. It is not medical advice. Check the package label; formulations change.