Flax Seeds (Linseeds)

TLDRLast updated 6 October 2026

Linseeds, also called flax seeds have a low FODMAP reference of 14 g. The 17 g reference is moderate and 30 g is high.

Serving sizes for flax seeds (linseeds)

Linseeds, also called flax seeds: 14 g low, 17 g moderate and 30 g high. Reference portions are not exact transition cutoffs.

Low
0.93 tablespoonsabout 14 g
FructoseLow
LactoseLow
FructansLow
GOSLow
SorbitolLow
MannitolLow

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 Flax Seeds (Linseeds) and their FODMAP ratings
ServingAmountFODMAP rating
1 tablespoon
1.13 tablespoons
2 tablespoons

Is flax seeds (linseeds) low FODMAP?

A 30 g two-tablespoon portion is high in this guide. The smaller 14 g low reference should not be replaced by the tablespoon count used for a different seed.

Flax Seeds (Linseeds) and IBS: what to know

For linseeds, also called flax seeds, record the amount you actually eat rather than only the name of the food. The 14 g reference describes this preparation, not a personal tolerance limit. Individual IBS responses differ. Diet and IBS.

Gut-friendly ways to eat flax seeds (linseeds)

Weigh the flax seeds before adding them to a mixture; the low reference is 14 g, about one tablespoon. Compare chia seeds using its own serving guide.

Frequently asked questions

What is the low FODMAP portion for flax seeds (linseeds)?

The low reference is 14 g, approximately 1 tablespoon. The moderate reference is 17 g and the high reference is 30 g.

Can I use the same portion for a different preparation?

This guide describes linseeds, also called flax seeds. Use the separate guide for chia seeds rather than transferring this portion.

How should I measure a shared recipe?

Measure the total amount of linseeds, also called flax seeds before combining it with the other ingredients, then divide by the number of equal portions. Keep the 14 g low reference in mind for each portion.

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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.