Fish Sauce (Vegan)

TLDRLast updated 3 October 2026

Vegan fish sauce is low FODMAP at 20 ml, approximately 1 tablespoon. Fructose is moderate at 32 ml and high at 43 ml. Fructans are also moderate at 43 ml.

Serving sizes for fish sauce (vegan)

The low volume is 20 ml. Fructose is moderate at 32 ml; at 43 ml fructose is high and fructans moderate.

Low
1 tablespoonabout 20 ml

Tested serving sizes

Tested serving sizes for Fish Sauce (Vegan) and their Gut Friendly rating
ServingAmountMain FODMAPRating
1 tablespoon20 mlFructans 0.05 gLow
1½ tablespoons32 mlFructans 0.07 gModerate
2 tablespoons43 mlFructose 0.15 gAvoid

Breakdown for 1 tablespoon

0.03gFructose
0gLactose
0.05gFructans
0gGOS
0gSorbitol
0gMannitol
1 tablespoonabout 20 ml

Is fish sauce (vegan) low FODMAP?

At the smaller reference all six groups are low. At 32 ml fructose alone is moderate, while lactose, mannitol, sorbitol and GOS stay low throughout the listed volumes. A vegan formulation is a different preparation from traditional fish sauce, even when both are used for savoury seasoning.

Fish Sauce (Vegan) and IBS: what to know

For IBS, account for the condiment added during cooking as well as a dipping sauce served alongside the meal. A vegan label tells you about the product type but does not establish an unrestricted low-FODMAP amount. Keep the exact bottle and quantity in your meal notes when comparing your response.

Gut-friendly ways to eat fish sauce (vegan)

Measure it into a dressing, soup or stir-fry before mixing. For a shared recipe, divide the total between the portions actually eaten. If you substitute for traditional fish sauce, use this vegan product's serving guidance rather than carrying over the original recipe ingredient's rating. Coconut aminos is another distinct condiment to assess on its own.

Frequently asked questions

How much vegan fish sauce is low FODMAP?

The listed low reference is 20 ml, approximately 1 tablespoon. Measure the liquid used rather than estimating several splashes.

Which groups change at larger portions?

Fructose becomes moderate at 32 ml and high at 43 ml. Fructans are also moderate at 43 ml, while the other four groups remain low.

Is it equivalent to ordinary fish sauce for FODMAPs?

No. A vegan replacement uses a different formulation. Follow its own portion guide even when it fills the same role in a recipe.

Can I add it to a homemade dipping sauce?

Count the vegan fish sauce in your share of the dip and check the remaining ingredients independently. Diluting it does not remove the amount already added.

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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.