Allergen Labeling under the Japanese Food Labeling Standards

Overview

Allergen labeling in Japan refers to the system under which foods must indicate the presence of ingredients that may cause food allergic reactions. It is an important part of Japanese food labeling because consumers with food allergies need reliable information before purchasing or consuming food products.

Under Japan’s Food Labeling Act and Food Labeling Standards, certain allergenic ingredients are designated as items subject to mandatory or recommended labeling. In legal and administrative materials, the term “allergy labeling” is often used. In business practice, the term “allergen labeling” is also commonly used. In this article, both terms are used in the same practical sense.

Items Covered by Allergen Labeling

Japan’s allergen labeling system distinguishes between “specified allergenic ingredients” that are subject to mandatory labeling and “items equivalent to specified allergenic ingredients” for which labeling is recommended.

Following the amendment to the Food Labeling Standards on April 1, 2026, cashew nut was added to the mandatory specified allergenic ingredients, and pistachio was added to the recommended items. As a result, there are 9 mandatory items and 20 recommended items.

Category	Practical Position	Items
Specified allergenic ingredients	Mandatory labeling	Shrimp, crab, walnut, wheat, buckwheat, egg, milk, peanut, cashew nut
Items equivalent to specified allergenic ingredients	Recommended labeling	Almond, abalone, squid, salmon roe, orange, kiwifruit, beef, sesame, salmon, mackerel, soybean, chicken, banana, pistachio, pork, macadamia nut, peach, yam, apple, gelatin

A transitional period applies to the labeling of cashew nut. However, for imported foods, it is not sufficient to rely only on the existence of a transitional period. Importers, distributors and overseas manufacturers should prepare to reflect the latest Japanese allergen list in Japanese labels as early as possible.

Practical Points for Imported Foods

For imported foods, allergen information shown on overseas labels or product specifications may not match the Japanese system. The covered items, terminology and labeling methods may differ from those used in the country of origin.

Therefore, when preparing a Japanese label, it is necessary to obtain and review ingredient lists, allergen tables, manufacturing process information and cross-contact information from the overseas manufacturer. These documents should be checked against Japan’s Food Labeling Standards, not merely translated from the foreign label.

Cross-contact means the possibility that an allergenic ingredient may unintentionally be introduced during manufacturing, storage or transportation. This is particularly important where different products are manufactured in the same factory, production line, or shared equipment. In such cases, the ingredient list alone may not be enough to determine the labeling position.

Points Often Missed in Practice

Allergen risks may be overlooked if the review is based only on the product name or the main ingredients. Particular attention is required for nuts, milk ingredients, wheat, egg, shrimp, crab, buckwheat and peanuts. These allergens may appear in confectionery, seasonings, prepared foods, frozen foods, health foods and other processed products.

Care is also required for processing aids, compound ingredients, flavors, seasonings and ingredients derived from additives. Overseas specifications sometimes omit details that are necessary for Japanese labeling. Before creating a Japanese label, the importer should confirm the breakdown of ingredients and the origin of raw materials.

How Allergen Information Is Shown

Allergen information may be shown individually within the ingredient list or collectively in a separate allergen statement, depending on the labeling format. In practice, the reviewer must check the relationship between ingredients, additives, compound ingredients, substitute expressions and expanded expressions.

For imported foods, a direct translation of the overseas label may not be sufficient. Even if a term is commonly used overseas, it may not be clear enough for Japanese allergen labeling. The Japanese label must be reviewed from the viewpoint of the Japanese Food Labeling Standards.

Relationship with Advertising and Sales Descriptions

Allergen-related statements are not limited to the package label. E-commerce product pages, brochures, catalogues, shop displays and sales materials also require careful control.

Claims such as “allergen-free,” “gluten-free,” “milk-free” or similar expressions should not be used unless the business operator has sufficient supporting documents and manufacturing control information. If the actual product or manufacturing process does not support the claim, the statement may mislead consumers.

In Japan, such statements may raise issues not only under the food labeling rules but also under the Act against Unjustifiable Premiums and Misleading Representations. For imported foods, overseas marketing descriptions should not be used automatically for the Japanese market.

Practical Checklist for Importers, Customs Brokers and Freight Forwarders

Businesses handling imported foods should obtain allergen information from the overseas manufacturer before importation and ensure that the Japanese label can be prepared correctly. Inadequate allergen labeling may lead to health risks, suspension of sales, product recalls and serious problems with customers or retailers.

In practice, the following points should be checked:

• whether any mandatory or recommended allergen items are included in the product;
• whether compound ingredients or additive-derived ingredients contain allergenic materials;
• whether the overseas allergen table corresponds to the Japanese allergen list;
• whether there is any cross-contact risk in the same factory, production line, or shared equipment;
• whether the Japanese label, e-commerce description and advertising statements are consistent;
• whether there is sufficient evidence when making “free-from” or “not used” claims.

For imported foods containing nuts, special attention should be paid to the treatment of cashew nut and pistachio under the latest Japanese allergen labeling rules.

Why This Matters for Overseas Suppliers and Origin-Side Freight Forwarders

Overseas manufacturers, exporters, customs brokers and origin-side freight forwarders may assume that a label accepted in the exporting country can be used in Japan with simple translation. In practice, this is risky. Japanese importers often request detailed ingredient and allergen documents because Japanese retail, customs-related distribution and consumer protection practice require a cautious and document-heavy approach.

This does not mean that Japan applies a completely different food safety concept. Rather, the practical issue is that Japanese business partners may need more detailed documentary confirmation than overseas suppliers expect. Early document preparation reduces label corrections, shipment delays, sales suspension and disputes after importation.