Ingredo.app for crustacean allergy
Turn on Crustacean allergy and Ingredo.app hard-blocks every declared source on any food you scan, citing the source behind each flag. Because we cannot detect trace amounts or cross-contamination, the physical label stays authoritative.
Allergen profiles are a hard block, not a soft caution — a declared source turns the verdict to "avoid" outright, rather than nudging the score.
Where an ingredient cannot be verified, the result degrades to "couldn’t verify — check the label". A safety flag never silently becomes a pass.
What Ingredo.app flags for crustacean allergy
Declared sources are a hard block; anything we cannot verify is a caution, never a pass.
Hard block
- Crustaceans: prawn, shrimp, crab, lobster, crayfish, krill
Check the label
- Ingredients of uncertain origin — flagged rather than passed
- "May contain" cross-contamination warnings — always verify on the physical label
Good match
- Products with no declared source and no cross-contamination warning
How to use it
Declared sources are a hard block; anything we cannot verify is a caution, never a pass.
Turn on Crustacean allergy
Enable the profile once during onboarding or in settings.
Scan the product
Point your camera at any food barcode.
Get your verdict
Avoid, check with caution, or good match — with the ingredient cited.
Where it hides
Where crustaceans most often turns up unexpectedly.
Shrimp paste and XO sauce in South-East Asian cooking
Krill oil in omega-3 supplements
Seafood stock and bisque bases used in soups and sauces
Common questions
"Shellfish" usually covers both crustaceans and molluscs, which EU law treats as two separate allergens. We keep them separate too, so turn on both profiles if you react to both.
Glucosamine is often made from shellfish shells. Where a label declares the source we flag it; where it does not, the ingredient is marked uncertain.