Is anything I paste sent anywhere?

No. The checker runs entirely in your browser. Nothing you paste is stored or sent.

Does "no allergens found" mean a product is safe?

No. The checker only looks for names it knows, and an ingredient list can be incomplete or out of date. Read the full label, including the Contains statement, and contact the manufacturer if you're unsure.

Where does the list of names come from?

From the allergen dictionary in the SafeScan app, limited here to names that clearly come from one of the 9 major US allergens. The app itself matches more than 1,000 names and also covers extended allergens and diets.

Why are mollusks like squid and clams not flagged?

Under US law only crustacean shellfish, such as crab, lobster and shrimp, are a major food allergen. The SafeScan app lets you add mollusks as an extended allergen.

Allergen Ingredient Checker – Find Hidden Allergens Free

This is an information tool, not medical advice. It finds names it knows; it can't tell you a product is safe.

Names the checker looks for

These names come from the allergen dictionary in the SafeScan app. On most US packaged foods the allergen source must also be named, for example "whey (milk)", but these names matter on foods outside the labeling rules and on imported products.

Milk

milk, whole milk, skim milk, nonfat milk, milk powder, dry milk, milk solids, milk protein, milk fat, milkfat, butter, butterfat, buttermilk, butter oil, cream, heavy cream, sour cream, cream cheese, cheese, cheddar, parmesan, mozzarella, ricotta, ghee, curds, custard, pudding, half and half, yogurt, yoghurt, kefir, casein, caseinate, sodium caseinate, calcium caseinate, whey, whey protein, whey powder, acid whey, sweet whey, lactalbumin, lactoglobulin, lactoferrin, lactitol, hydrolyzed milk protein, recaldent, lactose. Not flagged: cocoa butter, cacao butter, shea butter, peanut butter, almond butter, cashew butter, nut butter, apple butter, butter bean, butter beans, cream of tartar, coconut milk, coconut cream, almond milk, oat milk, rice milk, soy milk.

Egg

egg, eggs, egg white, egg yolk, egg powder, eggnog, albumin, albumen, globulin, ovomucin, ovomucoid, ovalbumin, lysozyme, meringue, mayonnaise, egg lecithin.

Peanuts

peanut, peanuts, peanut butter, peanut oil, peanut flour, peanut protein, arachis hypogaea, arachis oil, groundnut, groundnuts, monkey nuts, hydrolyzed peanut protein, mandelonas, beer nuts.

Tree nuts

tree nuts, tree nut, almond, almonds, cashew, cashews, walnut, walnuts, pecan, pecans, pistachio, pistachios, macadamia, brazil nut, brazil nuts, hazelnut, hazelnuts, filbert, filberts, chestnut, chestnuts, pine nut, pine nuts, pignoli, praline, marzipan, nougat, gianduja, nut butter, nut milk, nut flour, nut oil, nut paste, nut extract. Not flagged: water chestnut, water chestnuts.

Wheat

wheat, whole wheat, wheat flour, wheat starch, wheat germ, wheat bran, wheat protein, wheat gluten, vital wheat gluten, breadcrumbs, panko, bulgur, couscous, durum, einkorn, emmer, farro, kamut, spelt, semolina, triticale, seitan, hydrolyzed wheat protein.

Soy

soy, soya, soybeans, soybean, soybean oil, soy sauce, soy protein, soy protein isolate, soy protein concentrate, soy lecithin, soy flour, soy milk, soy fiber, edamame, tofu, tempeh, miso, natto, textured vegetable protein, tvp, hydrolyzed soy protein.

Fish

fish, cod, salmon, tuna, bass, anchovy, anchovies, sardine, sardines, tilapia, haddock, halibut, mackerel, pollock, trout, catfish, swordfish, mahi mahi, fish sauce, fish oil, fish gelatin, fish stock, surimi, imitation crab, worcestershire sauce.

Crustacean shellfish

shrimp, prawn, prawns, crab, lobster, crawfish, crayfish, shellfish extract, shellfish stock. Not flagged: crab apple, crab apples, imitation crab.

Sesame

sesame, sesame seeds, sesame oil, sesame paste, sesame flour, tahini, halvah, halva, hummus, benne seeds, gingelly oil, til oil.

For more detail, read the guides to hidden names for milk, egg, wheat, soy and sesame.

Allergen ingredient checker