Mannitol (E421)

TLDRLast updated 6 October 2026

A verified low FODMAP portion is not established here for mannitol (e421). No numerical allowance is verified for this mannitol sweetener entry. A food containing mannitol is not a reference for the isolated ingredient.

Serving sizes for mannitol (e421)

Verification pending: these reference amounts and ratings have not been validated for this exact food or preparation.

High
1 teaspoonabout 5 ml
FructoseLow
LactoseLow
FructansLow
GOSLow
SorbitolLow
MannitolHigh

Reference portions

Select an amount or rating to update your portion. These are reference portions, not exact cut-offs or recommended intakes.
Reference portions for Mannitol (E421) and their FODMAP ratings
ServingAmountFODMAP rating
Reference portionNot availableLow
Reference portionNot availableModerate
1 teaspoon

Is mannitol (e421) low FODMAP?

The existing mannitol (e421) table remains unverified. No numerical allowance is verified for this mannitol sweetener entry. A food containing mannitol is not a reference for the isolated ingredient. Its figures should not be treated as a confirmed allowance.

Mannitol (E421) and IBS: what to know

For mannitol (e421), keep the exact form and amount in mind. Portion size and preparation affect how food references should be compared. Monash: FODMAP questions and food preparation. This public source supplies background, not verification of the numerical table.

Gut-friendly ways to eat mannitol (e421)

No numerical allowance is verified for this mannitol sweetener entry. A food containing mannitol is not a reference for the isolated ingredient. Compare Maltitol (E965), Isomalt (E953). These guides describe their own preparations and portions.

Frequently asked questions

What is the FODMAP portion for mannitol (e421)?

No verified portion can be given for this entry yet. No numerical allowance is verified for this mannitol sweetener entry. A food containing mannitol is not a reference for the isolated ingredient.

How should I measure or check mannitol (e421)?

No numerical allowance is verified for this mannitol sweetener entry. A food containing mannitol is not a reference for the isolated ingredient.

Which other guides are useful when comparing mannitol (e421)?

Compare Maltitol (E965), Isomalt (E953). These guides describe their own preparations and portions.

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Sources and editorial notes

Published and maintained by Gut Friendly. This guide has not been independently reviewed by a dietitian. Serving information comes from our food catalogue. Where references are listed, they explain the research and preparation differences. Check the original source for current portions.

Gut Friendly provides general information, not medical advice.