Allergen

Soy on food labels: other names and where it hides

Soy turns up as beans, flour, protein, sauce, miso, tofu and lecithin (E322). It is one of the main food allergens, so packaged food must name it. Lecithin can also come from sunflower or egg, so the source matters. Bravoora reads every soy name and tells “soy lecithin” apart from “sunflower lecithin”.

By Bravoora teamUpdated Sources checked 8 sourcesHow we check

A heap of dried soybeans.

What are the other names for soy on a label?

On a label, soy can also appear as “Soya”, “Soybeans”, “Edamame”, “Tofu” or “Miso”.

SoyaSoybeansEdamameTofuMisoTempehSoy lecithinSoy lecithin (E322)Soy proteinSoyYubaNattoOkaraShoyuKinakoTamariSoy flourGlycine maxSoybean oilGlycine sojaPhosphatidesSoya lecithinEmulsifier 322Lecithin (E322)
All 34 names
Soy isoflavonesSoy protein isolateSoya lecithin (E322)Hydrolysed soy proteinHydrolyzed soy proteinTextured vegetable proteinTexturised vegetable proteinTexturized vegetable proteinE322INS 322

Bravoora knows all of these, and the free label checker finds every one. Try the label checker · How Bravoora decides

Where is soy found?

  • Meat alternatives and protein bars often use soy protein.
  • Chocolate and baked goods often contain soy lecithin.
  • Soy sauce, miso and many marinades are made from soybeans.
  • Breakfast cereals and snacks can contain soy flour or soy protein.

Label code: E322 (lecithin)

E-number pageE322 · Lecithins

Is soy a major allergen?

Yes. Soy is one of the main food allergens, so packaged food must name it, including soy lecithin.

AllergenUSUK and EuropeGulf
SoybeansRequiredRequiredRequired

Sources checked 22 September 2026. All allergen guides

Which diets and allergies does soy fit?

For soy: a soy-allergy profile gets Not for you; vegan, vegetarian, dairy-free, gluten-free, peanut-allergy, sesame-allergy, egg-allergy and caffeine-free profiles get Fits you.

VeganFits youIt comes from a plant.
Soy allergyNot for youIt is soy, including soy lecithin (E322).

A packed product can still carry a “may contain” warning, so check the pack.

Does soy fit you?

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What is soy?

Soy is a major allergen on food labels in the US, the UK, the EU and the Gulf. It appears as whole beans, protein, flour, sauce and oil, and as lecithin (E322), an emulsifier that can also come from sunflower or eggs.

How does Bravoora check for soy?

Bravoora looks for soy in every form, keeps “contains” and “may contain” apart, and checks whether the source of lecithin is stated.

How Bravoora decides, in full

More questions about soy

Who looks out for soy?

Soy matters most to people with a soy allergy, and anyone whose profile says to avoid soy.

Does soy fit a soy allergy profile?

No. It is soy, including soy lecithin (E322).

Is soy vegan?

Yes. It comes from a plant.

Sources and how to cite this guide

  1. US FDA: Food allergies
  2. UK Food Standards Agency: Allergen guidance
  3. European Union: Regulation 1169/2011 on food information to consumers, Annex II
  4. US FDA: Questions and Answers Regarding Food Allergen Labeling, Edition 5 (January 2025)
  5. FARE: Update to FDA guidance for food allergen labeling (tree nuts and coconut, January 2025)
  6. GCC Standardization Organization: GSO 9:2022, labelling of prepackaged food (current edition)
  7. GCC Standardization Organization: GSO 9/2013 English text, clause 5.2.5 (the allergen list as published)
  8. FAO/WHO international food labelling standard (CXS 1-1985, revised 2024)

To cite this guide: Bravoora, “Soy on food labels: other names and where it hides”, bravoora.app/ingredients/soy/, updated 11 October 2026.

Spotted something wrong or missing? Tell us.

General information, not medical advice. Rules differ by country and products change, so always check the pack.

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