Major Food Allergens & Label Reading Checklist 2026 Infographic

Reading a US label is a two-track exercise. Track one is intentional ingredients. Section 403(w) of the Federal Food, Drug, and Cosmetic Act requires the food source of each major allergen to appear either in the ingredient list (often in parentheses after a technical name) or in a "Contains" statement placed immediately after or adjacent to the ingredient list. If a "Contains" line is used, it must name every major allergen in the product, not only those hidden in unfamiliar ingredient names. Track two is unintentional presence. Allergens that enter a food through cross-contact—shared equipment, carry-over, or dust—are not required to appear in the ingredient list or "Contains" line. Manufacturers may instead use voluntary advisory wording such as "may contain" or "produced in a facility that also uses" allergens. FDA treats those statements as optional, truthfulness-bound warnings, not substitutes for allergen preventive controls.

The European Union follows a broader mandatory list. Regulation (EU) No 1169/2011 Annex II requires declaration of 14 categories: gluten-containing cereals; crustaceans; eggs; fish; peanuts; soybeans; milk (including lactose); specified tree nuts; celery; mustard; sesame; sulphur dioxide and sulphites above 10 mg/kg or 10 mg/litre total SO2; lupin; and molluscs. On prepacked foods, allergens must appear in the ingredient list with emphasis (font, style, or background) that distinguishes them from other text. When there is no ingredient list, the label must say "contains" followed by the Annex II name. Travelers and importers should not assume US and EU lists match: EU covers celery, mustard, lupin, and molluscs that US law does not treat as major allergens, while US sesame rules align with EU sesame labeling but tree-nut naming and fish species rules differ in detail.

Beyond the nine majors, FDA’s allergen guidance notes that more than 160 other foods have been reported to cause allergic reactions in the United States, yet packaged labels need not use the FALCPA-style "Contains" format for those foods. That gap is why ingredient literacy still matters—mustard powder, lupin flour, or mollusc-derived ingredients may be legal and unemphasized on US labels even when they would be highlighted in the EU.

Cross-contact situations—buffets, bakeries, shared fryers, airline meals, or school cafeterias—demand a risk hierarchy separate from label reading. When a major allergen is deliberately in a recipe, avoidance is the primary strategy endorsed by public health agencies; there is no cure for food allergy. When only advisory "may contain" language appears, clinicians often help families decide whether to avoid, seek more information from the manufacturer, or accept a level of uncertainty; FDA does not standardize those phrases. Restaurant and deli foods may lack full ingredient lists, so asking about oils, garnishes, and prep surfaces is essential.

Emergency planning belongs in the same checklist as shopping. FDA emphasizes that even mild initial symptoms can progress to anaphylaxis, a severe reaction that can include airway constriction and shock. CDC school guidance identifies epinephrine as the recommended treatment for anaphylaxis and advises calling emergency medical services immediately after using an auto-injector. Antihistamines may ease hives or itching but do not replace epinephrine for breathing difficulty, throat swelling, repeated vomiting, dizziness, or multi-system symptoms. Personal action plans, prescribed auto-injectors, and follow-up care should come from your clinician; this overview is not medical advice.

Use the paired checklist in this infographic when comparing US and EU shopping, auditing pantry items after the sesame transition, or training caregivers: verify statutory allergens, scan both ingredient and "Contains" blocks, treat advisories as voluntary cross-contact signals, and separate label certainty from kitchen and dining risk.