What happened
You were told it was safe. It wasn't.
Allergen cases are the strongest category on this site, for one reason: causation is rarely in dispute. An anaphylactic reaction happens within minutes of exposure, gets documented in an emergency room, and points unambiguously at a single meal.
The fight is about whether the disclosure failure was negligent, not about what caused the reaction.
Published July 27, 2026 · Last reviewed July 30, 2026
Restaurants
The typical case: you told the server about a serious allergy, asked directly whether a dish contained it, were assured it didn't, and it did. Or the kitchen used shared equipment or shared fryer oil after being told it mattered.
This is negligence in a fairly clean form. A restaurant that accepts responsibility for answering an allergy question — and every restaurant that answers one does — has to answer it accurately, and has to communicate it to the kitchen.
What matters most is proving the disclosure was made. A server who doesn't remember the conversation is the most common defense, and it's why any written record is disproportionately valuable: an allergy note typed into an online reservation, a delivery app special instruction, a text to a friend beforehand, or a companion who heard the exchange.
Packaged food
Federal law requires clear labeling of the major food allergens — milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and since 2023, sesame.
Undeclared allergens are one of the most common causes of food recalls in the United States. When a product's label omits an allergen it contains, that's a labeling violation and a straightforward defect claim against the manufacturer, generally under strict liability. You don't need to prove they were careless — only that the product was mislabeled and it injured you.
Check the FDA recall database for the product. Undeclared allergen recalls are issued constantly, and if yours is on the list the case is largely made.
What to preserve
Allergen cases are usually won on documentation that exists for a short time.
- The packaging, label, and lot number — do not throw it out
- The remaining food, frozen and sealed
- The receipt, order confirmation, or delivery app record showing your allergy instruction
- Emergency room records, including the epinephrine administration and any tryptase level drawn
- Your allergist's records establishing the diagnosed allergy predates this
- Names of anyone present when you disclosed the allergy
- The used EpiPen or auto-injector
What tends to make a claim worth pursuing
None of these is a guarantee. They are the facts an attorney will look for first when deciding whether to take a case like yours.
- You disclosed the allergy and there's a record of it
- The reaction required epinephrine, an ER visit, or hospitalization
- You have a documented allergy diagnosis predating the incident
- The product's label omitted an allergen it contained
- A recall was issued for undeclared allergens in that product
- You still have the packaging with the lot number
Questions
The menu had a disclaimer saying they can't guarantee against cross-contact. Does that end it?
No. A general disclaimer doesn't license a server to affirmatively tell you a dish is safe when it isn't. Once staff answer a specific question about a specific dish, they've assumed responsibility for that answer — and disclaimers of liability for personal injury are unenforceable in many states regardless.
I didn't use my EpiPen and went to the ER instead. Does that hurt me?
No. Treatment decisions in an emergency aren't held against you. What matters is that the reaction was documented by medical professionals close in time to the meal.
My child had the reaction at school or camp.
Different analysis, and often a stronger one — schools and camps typically have written allergy action plans they're obligated to follow, and a documented failure to follow their own protocol is clear evidence. If it's a public school, notice-of-claim deadlines against government entities can be as short as 60 to 180 days, so move quickly.
Read next
Other situations
I was part of an outbreak
The strongest position in this category. Causation is largely handled for you.
Read this
I got sick after eating out
The hardest claim in this category. What makes it winnable has to be done while you're ill.
Read this
There was something in my food
Straightforward to prove — if you kept the object. Most people don't.
Read thisEvidence and research resources
See all resourcesEvidence checklist
The records, objects, photographs, and timelines worth preserving now.
Read thisPlain-language glossary
Medical, insurance, safety, and legal terms explained without the jargon.
Read thisOfficial sources
The government, court, safety, and medical sources used to check this site.
Read thisHave a lawyer look at this
A free review tells you whether the facts you have are the facts that matter. No cost, and no obligation to hire anyone.
Free · No obligation · About 90 seconds