An allergic reaction after eating a food can raise immediate questions: was the allergen really present? Should it have appeared on the label, the menu or the online order form? And can the medical treatments undergone, the days of illness or a severe reaction give rise to compensation? The issue is not just the severity of the symptoms. The quality of the information received also matters, and above all, the possibility of linking that specific food to the harm.

I want to help you sort through the facts and rules. I will explain what changes between a packaged product and a dish prepared by a restaurant, why the omission of an allergen does not automatically entail compensation, and which elements make a claim more understandable and verifiable. The initial distinction is simple: the information error is important, but personal injury and its link to the food must be proven.

When the allergen must appear on food information

Allergens subject to declaration are identified by European legislation. EU Regulation No 1169/2011 requires the presence of ingredients or processing aids listed in Annex II and still present in the finished product to be indicated. The list includes, among others, cereals containing gluten, crustaceans, eggs, fish, peanuts, soybeans, milk, tree nuts, celery, mustard, sesame, lupins and molluscs, as well as sulphites under the conditions provided for by the rule.

For prepacked food, the allergen must stand out clearly. A prepacked food is any single item for presentation as such to the final consumer, consisting of a foodstuff and the packaging into which it was put before being offered for sale. The allergen must be mentioned in the ingredient list and must be emphasized in relation to other ingredients; if the list is missing, the declaration must still indicate that the product contains the substance in question. These rules, together with mandatory particulars and label legibility, are provided for by Articles 9, 13 and 21 of EU Regulation No 1169/2011 on the provision of food information to consumers.

A declared ingredient and accidental contamination are not the same thing. If milk, peanuts or another allergen are part of the recipe, the issue primarily concerns the correctness of the mandatory information. If instead the substance entered the food through contact during processing or preparation, it must be ascertained whether it was actually present in the consumed product, what procedures were adopted and what warnings were available. It is not sufficient to use the expression "traces" in a generic way: the concrete event must be reconstructed.

Menus, counters and online purchases: information does not disappear

For non-prepacked foods, allergen labelling remains mandatory. The European regulation expressly considers foods offered for sale to the final consumer without prepacking, those packed on the sales premises at the consumer's request and those prepared by mass caterers. Information relating to allergens must be provided for such foods; Member States may regulate the modalities through which to make it available. Therefore, it is not correct to treat a dish served at the table as if it were exempt from information obligations.

The decisive factor is what the consumer could know before eating. Menus, allergen registers, signs, dish descriptions or information provided by staff may become relevant in the reconstruction. If a person communicates their allergy and receives a precise answer regarding the absence of a substance, that answer counts; however, it must be compared with the actual recipe, the ingredients used and the documentation available on the premises. A generic indication does not clarify on its own whether the individual dish was suitable or not.

In distance selling, information must be accessible before the purchase is made. For prepacked foods sold online, Article 14 of EU Regulation No 1169/2011 requires that mandatory information, except for the exception provided by the rule, be available before the purchase is concluded and that all particulars be available at the time of delivery. Screenshots of the product page, order confirmation and photographs of the received label can thus show whether the information was complete, absent or contradictory.

When the omission can ground a claim for compensation

Incomplete labels or menus do not automatically produce compensation. The omitted indication of an allergen may constitute a violation of food information rules and may make an operator check necessary. To obtain compensation for personal injury, however, it is also necessary to prove that concrete harm occurred and that such harm derives from the consumed food. The lack of information is a relevant fact; it does not replace the ascertainment of the cause of the reaction.

Health damage must be documented in its consistency. A skin, respiratory or gastrointestinal reaction, a visit to the emergency room or an anaphylactic shock may constitute compensable consequences if they result from health documents and are linked to the event. To quantify the damage, there is no fixed figure linked to the name of the allergen or the diagnosis alone: the intensity of the reaction, treatments, duration of symptoms, any persistent consequences and necessary medical assessments all have an impact.

Economic losses also require separate proof. Expenses for visits, medications, examinations, indispensable travel and other financial consequences enter into a claim only if they are actual and documented. The receipt or payment confirmation serves to identify the purchased food; health receipts and other documents instead serve to prove individual expenses. Separating these elements helps not to confuse the proof of injury with the proof of its economic consequences.

The defective product and other possible liabilities

A packaged food can also be assessed as a defective product. The Consumer Code considers a product defective when it does not provide the safety which a person is entitled to expect, taking into account presentation, instructions and warnings. The omission of an allergen actually present can be an important element of this evaluation, because an allergic person bases their choice precisely on the information provided by the packaging.

Under the defective product regime, the claimant must prove three steps. Article 120 of the Consumer Code requires proof of the defect, the damage and the causal connection between defect and damage. Articles 117 and 120, which can be consulted in the text of the Consumer Code published in the Official Gazette, show why it is not enough to prove that a reaction occurred immediately after a meal: it is also necessary to link the allergen to that product and show how the information or safety of the product was inadequate.

For a prepared and served dish, the relationship with the establishment may assume independent relevance. Restaurants, bars, canteens, catering services or delivery platforms do not always play the same role. It is necessary to distinguish who prepared the food, who chose the ingredients, who managed the allergen information and who communicated with the customer. This distinction does not serve to distribute indiscriminate accusations: it makes it possible to identify which conduct affected the preparation of the dish or the information received.

The date the product was placed on the market determines which rules apply. Directive (EU) 2024/2853, as corrected in 2026, covers products placed on the market or put into service after 8 December 2026, meaning from 9 December. The previous regime remains applicable to earlier products. A reaction caused by food already placed on the market before that date must therefore be assessed under the rules applicable to it. The reference is the consolidated text of Directive (EU) 2024/2853.

What evidence links the food to the reaction

Proof is a sequence of coherent elements. In concrete terms, the product or dish, the moment of consumption, the presence of the allergen and the documented reaction must match. No single element is always sufficient on its own. A medical report can describe the reaction, but it does not automatically identify the food; packaging can indicate the product, but it does not prove the actual clinical cause of the malaise on its own.

Packaging, batch and food residue can be very useful. If available, it is appropriate to keep the product, its packaging, the label, the batch, the expiry date, the purchase receipt and photographs taken immediately. The batch links the event to a production run; the packaging can show the information actually provided to the consumer. Even when the residue is no longer there, images, receipt and order confirmation can contribute to the reconstruction.

Medical documentation must be close in time to the incident. Reports, prescriptions, certificates and notes made during assistance can help place the reaction in its temporal context. A previous allergological diagnosis is useful to explain sensitivity to a specific substance, but it does not prove on its own that the allergen was present in the food consumed on a certain date. These are two different aspects, both necessary.

Alternative causes must be considered, not ignored. If multiple foods were consumed in the same interval, medications taken or other factors potentially capable of causing symptoms occurred, the causal link may be more difficult to prove. This does not automatically exclude a claim, but makes an accurate chronology essential. The potential presence of a clear and known warning before consumption can also affect the assessment of the injured party's conduct.

What to do after the incident without losing useful data

The priority is to address the reaction with the necessary medical assistance. Collecting evidence comes after protecting health. Once the urgent phase is over, noting down the date and time of consumption, the food eaten, the symptoms that appeared and the information received can help fix details that are easily lost. This note does not replace a medical report, but makes subsequent reconstruction more orderly.

A dispute must indicate precise facts. Communicating to the operator which product or dish was consumed, when and where, which allergen is involved and what documents are available is more useful than a generic accusation. If the product is packaged, it is important to report the batch and brand; if the event concerns an establishment, the ordered dish, the menu and the information received before consumption may be relevant.

Reporting for controls and claiming compensation have different purposes. Reporting a possible deficiency in allergen information can encourage food safety checks. Compensation, however, requires proving personal injury, its connection to the food and the party to whom the conduct or product is attributable. The two initiatives may concern the same facts, but they do not replace one another.

Frequently asked questions

Can I claim compensation if the allergen is missing from the label but I had no symptoms?

Not for the mere abstract risk of personal injury. The omitted indication may be relevant for checks on the operator and for challenging the quality of information, but compensation for personal injury requires concrete harm and a connection to that food. Any remedies relating to the purchase of the product remain separate.

Do I have to prove that the allergen was actually present in the food?

Yes, it is one of the central facts. It is necessary to link the reaction to a food that actually contained the relevant substance. Proof can derive from packaging, residue, ingredients, batch, recipe, establishment documents and other converging data. Laboratory analysis can be useful, but it is not the only possible source of evidence.

Can the restaurant limit itself to answering my questions verbally?

A purely verbal answer is not enough. Allergen information must relate to each dish and be provided before service. A restaurant can use a menu, register or equivalent system; it can also display a notice directing customers to staff, but the information must be supported by written documentation readily accessible to customers and inspectors. This is required by Article 19 of Legislative Decree 231/2017.

Does the phrase "may contain traces" exclude all liability?

No, it does not automatically resolve the issue. A warning can affect what the consumer knew before purchase or consumption, but it does not prove on its own either the presence of the allergen in the individual product or the overall correctness of the information. Wording, visibility, the actually consumed product and the cause of the reaction all matter.

Does an anaphylactic shock entitle one to a pre-determined sum?

No, automatic amounts do not exist. A severe reaction requires careful evaluation of its consequences, but quantification depends on medical documents, treatments, duration of symptoms, any after-effects and demonstrated expenses. Even before the amount, the link with the food and the undeclared allergen must be established.

Orienting oneself starting from verifiable facts

A well-set claim starts from simple and retainable elements. Identifiable product or dish, packaging or screenshots, information received, medical documentation and temporal sequence make it possible to distinguish a formal inaccuracy from an omission that may have concretely affected consumption safety. If the reaction involved medical treatment or significant consequences, you can contact me to examine the problem without taking for granted what still requires verification.