Allergens up front
The allergens a product declares, like milk, eggs, soy or tree nuts, are listed right on the product sheet. No more hunting for the tiny “Contains” line.
Allergy scanner app
The allergy scanner app that checks labels before they reach your cart
Scan a barcode and Osana shows the product's declared allergens next to its full ingredient list, explained in plain English. Fewer squinting sessions in the aisle, more confidence for everyone at your table.
Trusted by 5,000+ healthy families
Allergens
MilkSoyWheat
From the product's allergen declaration
Why families use Osana as their allergy scanner
Every ingredient decoded
Soy lecithin, casein, albumin: each ingredient gets a short explanation, so you can see where an allergen actually comes from.
How to check a product for allergens
- 01
Scan the barcode
Point your camera at the package. Osana finds the product in its database of packaged foods from major US retailers.
- 02
Read the allergen line
Contains
- Peanuts
- Soy
- Sea salt
See the declared allergens at a glance, then scroll through the ingredients to understand where each one comes from.
- 03
Pick a safer swap
Not a fit? Osana suggests alternatives in the same category so you can put something else in the cart right away.
The 9 major food allergens, at a glance
US labeling law requires these nine allergens to be declared on packaged foods. Osana surfaces them when the product data includes them.
- Milkwhey, casein
- Eggsalbumin
- Fishanchovy, cod
- Shellfishshrimp, crab
- Tree nutsalmond, cashew
- Peanutsgroundnut
- Wheatsemolina, durum
- Soylecithin, tofu
- Sesametahini
What to look for on an allergen label
The “Contains” statement
Required allergens must appear either in the ingredient list or in a “Contains” line right after it. Osana puts them on top so they are hard to miss.
Ingredient names that hide an allergen
Whey and casein come from milk, albumin from eggs, tahini from sesame. Osana's ingredient notes make those links obvious.
“May contain” warnings
Precautionary statements are voluntary and not standardized. For severe allergies, always read the physical package and follow your allergist's advice.
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Always double-check the package for severe allergies.
Allergy scanner FAQ
Which allergens does the Osana allergy scanner show?
Osana shows the allergens declared in the product data, which usually covers the nine major US allergens: milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy and sesame.
Can I rely on Osana for a severe food allergy?
Use Osana as a fast first check, not as your only safeguard. Recipes change and data can be incomplete, so always confirm on the physical package and follow your doctor's guidance.
Does the app check for cross-contact or “may contain” warnings?
These warnings are voluntary and often missing from product databases. When you see one on the package, trust the package.
Is the allergy scanner good for checking snacks for school?
Yes. Many parents scan lunchbox snacks before a school trip. You get the allergen line and the full ingredient breakdown in a few seconds.
Is Osana available on iPhone and Android?
Yes, Osana is available on the App Store and on Google Play.
Explore more Osana tools
Gluten Free ScannerCatch wheat, barley, rye and malt hiding in the ingredient list.Learn more Dairy Free AppSpot whey, casein and other milk ingredients hiding on the label.Learn more Food Ingredient CheckerUnderstand every ingredient on the label, rated and explained.Learn more
Looking for the full picture? Discover the Osana food scanner app and our scoring methodology.
Check allergens in seconds, every grocery run.
Scan a barcode, see declared allergens and understand every ingredient with Osana.
Download Osana Scan