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E421Caution

Mannitol

Group: Sweeteners

Harm level3 of 5In moderation

In plain words

Mannitol is a mildly sweet sugar alcohol that does not get sticky or absorb moisture. It is used as a dusting on chewing gum, in sugar-free sweets and in some tablets.

Where you find it: chewing gum, sweets, dustings

Our recommendation

Limit it; people with IBS and children in particular should be careful.

Possible risks and effects

  • Bloating, flatulence and diarrhoea in larger amounts
  • People with IBS (FODMAP) and children are more sensitive

For experts

A polyol naturally present in mushrooms and some vegetables, industrially made by hydrogenating fructose or by fermentation; sweetener, anti-caking agent and bulking agent. It is poorly absorbed and therefore osmotically laxative, carrying the same mandatory EU warning as other polyols. Its medical use as an osmotic diuretic illustrates its strong osmotic action.

Check another E-number

More from this group

E950Acesulfame KE952CyclamateE420SorbitolE951AspartameE953IsomaltE954SaccharinE955SucraloseE961Neotame

This information is educational and based on EFSA assessments and available studies; it does not replace medical advice. With allergies, intolerances or illness, follow your doctor’s advice.