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🌱 Soybeans allergy: label names, hidden sources & scanning
Soy is one of the most widely used ingredients in processed food — as protein, flour, oil, and above all lecithin (E322), an emulsifier found in a large share of packaged products. That makes strict avoidance unusually dependent on reading labels.
Hidden label names our scanner matches
An ingredient list can contain soybeans without ever using the word. These are the actual terms Scallergy's matching engine checks — the same list the app uses when it scans a barcode:
Common derivatives
Where soybeans commonly hides
- soy sauce, tofu, tempeh, edamame
- chocolate (lecithin)
- margarine and spreads
- vegetarian meat substitutes
- baked goods
- canned soups and broths
How Scallergy verdicts soybeans
Avoid — soybeans (or one of the label names above) appears in the product's ingredient list.
Caution — the product carries a “may contain” / cross-contamination warning for it.
Unknown — we don't have trustworthy ingredient data, and we say so instead of guessing. The verdict is always driven by what's in the product; the severity you set in your profile is shown as context.
Scan for soybeans in seconds
Set soybeans in your allergen profile once — every barcode scan checks all 14+ label names above automatically. Free, independent, no ads.
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Frequently asked questions
Which label names mean soybeans?
Beyond the word “soybeans” itself, look for terms like soy, soya, edamame, tofu, miso, tempeh. These are the exact terms Scallergy's scanner matches when it checks an ingredient list.
Does soybeans have to be declared on the label?
Yes — in the EU (Regulation 1169/2011, Annex II) and the US (FALCPA/FASTER Act) soybeans must be emphasised in the ingredient list of prepacked food.
What does “may contain soybeans” mean?
“May contain” is a voluntary cross-contamination warning: the product doesn't list it as an ingredient, but it is made where contact is possible. Scallergy shows these as a Caution verdict — distinct from Avoid, which means the allergen is actually in the ingredient list.
Can Scallergy guarantee a product is soybeans-free?
No — no app can. Scallergy checks ingredient data from USDA FoodData Central, Open Food Facts, and community submissions, shows its source and an honest “Unknown” when data is thin, and is assistive only: always check the printed label and follow your allergist's advice.
Related allergens
Scallergy is assistive, not medical advice. Ingredient data can be incomplete or out of date — always check the physical label and consult an allergist about your allergies. Sources: EU Regulation 1169/2011 (Annex II); US FALCPA (2004) and FASTER Act (2021); our data sources.