What do people get wrong about allergy labelling on Japanese food?

This answer is a draft. It stays unpublished until legal review and source verification are complete.

For travellers with food allergies, Japan is both reassuring and confusing: the labelling law is strict, but the list of covered allergens differs from the EU and US, and restaurants are not covered at all.

The Japanese list (Food Labelling Standards)

• Labelling applies to pre-packaged processed foods sold in shops. Restaurants, bakeries and takeaway counters are exempt; many post voluntary allergen charts, especially chains.
• Japanese labels list allergens in the ingredient list, often in brackets, e.g. "soy sauce (contains wheat and soy)" (しょうゆ（小麦・大豆を含む）). The "contains, in part, …" (一部に…を含む) phrase at the end summarises the allergens present.
• Fish sauces and dashi are common hidden sources; buckwheat (soba) flour can appear in noodles that look like wheat noodles.

[Verify] The walnut enforcement date and the macadamia addition with the Consumer Affairs Agency's allergen labelling page before publication.

Misunderstanding 1｜"No allergens listed" means allergen-free

It means none of the 8 mandatory ones are declared. Sesame, soy or mustard may still be present and unlabelled if the manufacturer chose not to declare.

Misunderstanding 2｜Restaurant menus are legally checked

They are not. Ask staff; a printed allergy card in Japanese (free templates are offered by allergy charities and travel sites; JNTO's site lists medical and dietary resources) is the most reliable tool.

Misunderstanding 3｜"May contain" warnings are standard

Vague precautionary "may contain" labels are not permitted under Japanese rules; only specific cross-contamination warnings (e.g. "made on a line that also handles X") are allowed, so such notes are rarer than in the US. Absence of such a warning does not mean the factory is dedicated.

Misunderstanding 4｜Soba is a wheat noodle

Soba is buckwheat, a mandatory allergen in Japan because reactions can be severe. Soba is also served in the same water as udon in many shops.

Misunderstanding 5｜Epinephrine auto-injectors are easy to replace

Adrenaline auto-injectors are prescription-only. Bring your own within the personal-import limits and carry the prescription (see the article on bringing medicine).

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Sources

• Consumer Affairs Agency — Food allergen labelling (English summary)

https://www.caa.go.jp/en/policy/food_labeling/

• Consumer Affairs Agency — "Food Labelling Standards: allergens (specified raw materials, etc.)" [食品表示基準 アレルゲン（特定原材料等）]

https://www.caa.go.jp/policies/policy/food_labeling/food_sanitation/allergy/

• Japan National Tourism Organization — Dietary restrictions and allergy cards

https://www.japan.travel/en/plan/

⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.

About this article

What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.

This is general information. Results vary from person to person and depend on your own conditions and surroundings.

Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.

Rules and procedures change. Please confirm the latest official information before you act.

Sources

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