🍜 Ramen broth — almost always dashi-based, containing fish protein invisible to the eye and unlabeled at the table
🐟 Tsukiji, Tokyo — seafood central
🏪 Konbini — often your safest bet
Allergen Risk
Allergen Prevalence Index
This index scores two separate things: supply prevalence (how embedded an allergen is in the cuisine) and clinical prevalence (how common that allergy is in Japan's own population). They don't align — and the gap matters. Soy, wheat, and fish dominate on supply prevalence: structurally embedded in virtually every dish. Egg and milk dominate Japan's clinical allergy population, especially in children.1 Peanut and tree nuts score low on both — rare in traditional Japanese cooking, less common clinically — but that rarity is itself a risk because kitchens have little trained reflex for them. Read the callouts below before assuming "uncommon = safer."
Filter by allergen:
Allergen
Supply Prevalence
Hidden Risk
Cross-Contact
Restaurant Risk
Soy (大豆) Miso, shoyu, tofu, edamame, natto — structural to most broths and sauces
10
10!
8
10
Wheat (小麦) Soy sauce (shoyu), ramen, udon, tempura batter, panko, most sauces
9
10!
8
9
Fish (魚) Katsuo-dashi (bonito stock) in virtually every broth, soup, sauce — named dashi, not fish
9
10!
7
9
Buckwheat (そば) ⚠ Acute anaphylaxis risk — soba shared fryers also used for tempura and wheat noodles4
7
8
9!
8
Shellfish (えび・かに) Shrimp and crab mandatory labeled — shared fryers with tempura are the primary risk
8
6
8
7
Egg (卵) Ramen, tamagoyaki, tempura, mayonnaise — mandatory labeled on packaged goods
7
6
5
7
Sesame (ごま) Recommended-not-mandatory label status — sesame oil used widely in dressings, sauces, ramen
6
7
5
6
Dairy (乳) Traditionally low in Japanese cuisine — rising in baked goods, cream dishes, café culture
4
4
3
4
⚠ Buckwheat (soba) cross-contact: Soba noodles are cooked in the same water, using the same pots and fryers, as wheat-based noodles and tempura in most traditional restaurants. Even a dish containing no soba can trigger a reaction in severely buckwheat-allergic travelers from shared cooking equipment. Always ask: 「このお店ではそばを使っていますか？」 ("Does this restaurant use buckwheat/soba?")4
⚠ The invisible trinity — dashi · shoyu · miso: These three ingredients appear in the broth, sauce, or stock of nearly every savory dish in Japan and are almost never listed on a menu or understood as "allergen risks" by kitchen staff. A single bowl of miso soup contains all three simultaneously: fish protein (katsuo-dashi), soy (miso paste), and wheat (soy sauce). You must name each by its Japanese term on your card — not just its allergen category. だし (dashi) → fish · 醤油 (shoyu) → wheat + soy · 味噌 (miso) → soy.
Soy sauce is wheat: Standard Japanese soy sauce (shoyu) is brewed from wheat and soy together. Tamari (たまり) is a lower-wheat or wheat-free alternative, but labels vary — always confirm. For celiac travelers, bringing a small bottle of certified tamari from home is the safest approach.1
Sesame label gap: Sesame is on Japan's recommended — not mandatory — allergen label list. It appears in salad dressings, ramen tare, yakitori glazes, and mixed spice blends without disclosure obligation on restaurant menus. Verbal verification is necessary.
⚠ Peanut & tree nuts — rare in the cuisine, but that's the danger: Peanut and tree nuts are genuinely uncommon in traditional Japanese cooking — they do not appear in the foundational ingredients the way soy, wheat, and fish do. In Japan's clinical allergy population, egg and milk are the most prevalent food allergies (particularly in children), followed by wheat; peanut is a relatively smaller proportion than in Western allergy populations.1 This matters in two directions: (1) Kitchens have little trained reflex for peanut and tree nut requests — a chef who instinctively understands a soy allergy may have no mental model for peanut avoidance because they rarely encounter it. (2) Cross-contact risk is lower in traditional Japanese kitchens than in cuisines where peanut is structurally embedded. The allergen landscape shifts significantly at Western-influenced restaurants, cafes, dessert shops, and any venue serving international cuisine — where peanut, almond, and cashew appear as normal ingredients. Traveling in Japan with a peanut or tree nut allergy is generally more manageable than with soy, wheat, or fish — but requires specific vigilance in non-traditional settings.
Cuisine
Dish Allergen Map
Japanese cuisine is built on subtlety. The allergens are not on the plate — they are in the stock, the sauce, the glaze, the marinade. Order by what you can see, and you will miss what will hurt you. Order by asking what you cannot see.
| Dish | Primary Allergens | Hidden Risk Notes | Risk |
|---|---|---|---|
Miso Soup (味噌汁)Daily staple — served with almost every meal | FISH (DASHI)SOYWHEAT | STRUCTURAL ×3 — Katsuo-dashi (fish), miso (soy), and soy sauce (wheat) are all foundational components. None can be removed. No safe version exists in a traditional kitchen without advance communication and a complete recipe substitution (kombu dashi + no shoyu). | ● HIGH |
Ramen (ラーメン)Broth-based noodle — countless regional variations | WHEATSOYFISHEGG | STRUCTURAL — Wheat noodles and soy-based tare are non-removable. Fish dashi is structural in most broths (incidental in tonkotsu/pork-bone only). INCIDENTAL — Chashu egg topping can be omitted; ask specifically. | ● HIGH |
Tempura (天ぷら)Battered and deep-fried seafood or vegetables | WHEATSHELLFISHFISHEGG | STRUCTURAL — Wheat-egg batter defines the dish; cannot be removed. Dipping sauce (tentsuyu) is dashi-based — structural, not a garnish. CROSS-CONTACT — Shared fryers with soba buckwheat are a severe additional risk; ask before ordering anything fried. | ● HIGH |
Sushi / Sashimi (寿司・刺身)Rice with raw fish — seemingly allergen-simple | FISHWHEATSOY | STRUCTURAL — Fish is the dish. INCIDENTAL — Sushi rice seasoning (soy-based) and dipping shoyu can often be confirmed/swapped with tamari if wheat-allergic. Wasabi paste may contain wheat filler — ask. Shared surfaces with shellfish are a cross-contact concern at most counters. | ● MODERATE (fish) |
Soba (そば)Buckwheat noodles — Japanese staple | BUCKWHEATWHEAT (mixed)FISHSOY | STRUCTURAL ×2 — Buckwheat is the dish. Wheat mixed in to most commercial versions (unless labeled 十割/100% buckwheat). Dipping broth dashi is structural. CROSS-CONTACT — Cooking water and fryers shared with other noodles; a buckwheat-allergic traveler should avoid all noodle restaurants that also serve soba. | ● HIGH (buckwheat) |
Udon (うどん)Thick wheat noodles — milder than ramen | WHEATSOYFISH | STRUCTURAL ×3 — Pure wheat noodle, dashi broth, soy-based tare. All three are load-bearing to the dish. Simpler than ramen but equally non-negotiable. No mitigation path at a traditional udon shop. | ● HIGH |
Okonomiyaki (お好み焼き)Savoury pancake — Osaka and Hiroshima specialty | WHEATEGGSOYSESAME | STRUCTURAL — Wheat-egg batter binds the dish; non-removable. INCIDENTAL — Shrimp/squid fillings can vary by order; Worcestershire-style sauce and mayonnaise topping can sometimes be omitted. Bonito flakes garnish = fish; ask for omission. Sesame oil in batter varies by restaurant. | ● HIGH |
Yakitori (焼き鳥)Grilled chicken skewers — bar and street food | SOYWHEAT | INCIDENTAL (tare version) — Tare glaze contains soy sauce and mirin; can be avoided by ordering shio (salt) preparation. STRUCTURAL-FREE (shio version) — Plain salt-grilled yakitori is one of Japan's cleanest allergen options. Specify 塩で (shio de) — "with salt" — at ordering. | ● LOW (shio/salt only) |
Katsudon (カツ丼)Breaded pork cutlet over rice with egg | WHEATEGGSOYFISH | STRUCTURAL — Panko wheat breading defines tonkatsu; cannot be removed. Egg is beaten into the sauce — structural. Dashi and soy form the sauce base. CROSS-CONTACT — Shared tonkatsu fryer with shellfish is common at dedicated tonkatsu restaurants. | ● HIGH |
Edamame (枝豆)Steamed young soy beans — bar snack | SOY | STRUCTURAL — The dish is soy. No mitigation. Simple, clear risk — avoid entirely if soy-allergic. Otherwise one of Japan's cleanest snacks. | ● HIGH (soy) |
Plain Rice (ご飯)Steamed white or brown rice | NONE typical | No structural allergens. Confirm no seasoning (furikake rice seasoning contains sesame and often fish/soy — ask for plain only). A reliable anchor for any multi-allergen traveler; pair with shio yakitori and plain grilled protein for a complete safe meal. | ● LOW |
Kaiseki (懐石)Multi-course traditional tasting menu | FISHSOYWHEATEGG | STRUCTURAL across every course — Dashi and soy-based seasonings are fundamental to the entire format. Cannot be navigated on the night. With 48+ hours advance notice in writing, a skilled chef can construct an allergen-adapted kaiseki — but only if you communicate at booking, never at the table. | ● HIGH — advance notice only |
✓ Safest simple options: Plain steamed rice (白いご飯), grilled meat with salt only (塩焼き), plain vegetables (野菜のみ), and tamari-based dishes if confirmed wheat-free. At convenience stores (konbini), onigiri with allergen labels checked, plain rice balls, and clearly labeled packaged items are reliable.
Geography
Regional Allergen Risk Map
Japan's regional cuisines vary significantly — from Tokyo's soy-forward cooking to Osaka's wheat-heavy street food, Kyoto's delicate kaiseki, and Okinawa's unique Ryukyuan tradition. Where you travel changes your risk profile.
Hover regions for allergen and cultural detail
🏙️ Kansai — Osaka / Kyoto HIGH
Osaka's street food culture (okonomiyaki, takoyaki, kushikatsu) is wheat, egg, and shellfish-intensive with heavy shared-fryer cross-contact. Kyoto kaiseki is exquisite but requires advance written communication. Japanese-only resources dominate outside tourist zones.
↑ Wheat · Egg · Shellfish · Buckwheat cross-contact
🗼 Kantō — Tokyo MODERATE
Most internationally-oriented food scene. Widest range of allergen-aware restaurants. Best English-language support in Japan. Many chain restaurants publish complete allergen charts online — review before visiting. Dashi and soy still foundational everywhere.
↑ Soy · Wheat · Fish (dashi) · Soba cross-contact
❄️ Hokkaido LOWER
Japan's dairy heartland — less soy-dominant than Honshu. Dairy prevalence notably higher. Seafood (salmon, crab, scallop) integral. Sapporo has strong hospital infrastructure. Rural areas have limited English and fewer allergy-aware dining options.
↑ Dairy · Fish · Shellfish (crab) · Lower soy complexity
🌴 Okinawa LOWER
Ryukyuan cuisine is genuinely distinct from mainland Japan — less dashi-heavy, more pork and vegetable-forward. Notably lower allergen complexity for most travelers coming from mainland experiences. An underrated option for multi-allergen travelers.
↑ Pork · Some soy · Lower fish and wheat complexity
Where to Eat
Venue Safety Profile
Japan's hospitality culture is built on genuine care. The limitation is not attitude — it is that dashi and soy sauce are so foundational that a kitchen may not think of them as "allergen risks." A restaurant that declines your reservation because they cannot safely accommodate you is showing you the highest respect, not dismissing you.5
Higher Risk
Safer
Traditional izakayas, tachinomi bars, street stalls & night markets
No ingredient documentation. Everything grilled on shared surfaces or fried in shared oil. Kitchens are fast-paced; language barriers are high. Staff may agree to accommodate without the knowledge to do so.
⚠ Your card matters here, but acceptance is not confirmation. If they cannot explain what's in the sauce, choose something simple or leave.
HIGH RISK
Specialist ramen, soba, tempura & tonkatsu restaurants
Expert kitchens with mastery of their craft — but that craft is built entirely on dashi, soy, wheat, and shared fryers. These venues are the hardest to navigate because their signature ingredient is your allergen.
⚠ Soba restaurants in particular have shared cooking water. If you have buckwheat allergy, avoid entirely. If you have fish allergy, ramen broth is very rarely modifiable.
HIGH RISK
Chain restaurants (Yoshinoya, Gusto, Sushiro, Royal Host)
Major chain restaurants publish comprehensive allergen charts on their websites and in-store — often the most transparent allergen information in Japan. Check the chart before arriving. Staff can reference the chart but cannot guarantee kitchen cross-contact.
→ Best practical middle ground. Use the allergen chart on the restaurant's website before you arrive. Point directly to your allergens on the printed chart.
MODERATE
International restaurants, tourist-corridor dining — Shinjuku, Shibuya, Dotonbori
International clientele normalizes allergy requests. Some English-language menus available. More experience with Western allergy expectations. Still use your Japanese card — kitchen staff may not be English-speaking.
→ Reasonable confidence. Still present your card in Japanese. Many have handled this before.
LOWER RISK
International hotel restaurants & ryokan with allergy declaration system
International hotels systematically handle allergy declarations — the kitchen has a process. Ryokan (if notified at booking in writing) will prepare a fully tailored meal. Communicate at reservation, not on arrival.
✓ Best base for severe allergies. At ryokan, email in Japanese specifying your allergens at the time of booking — not as an afterthought.
LOWEST RISK
Konbini (convenience stores) — 7-Eleven, Lawson, FamilyMart
Japan's convenience stores have meticulous allergen labeling under the Food Labeling Act. Every onigiri, bento, and packaged snack lists the 8 mandatory allergens clearly. One of the most reliable safe-eating environments in Asia.2
✓ A lifeline for multi-allergen travelers. Use the allergen section (アレルギー表示) on every label. Open 24/7 everywhere.
MOST RELIABLE
Shojin ryori (精進料理): Traditional Buddhist temple cuisine is entirely plant-based — no meat, fish, or dashi. It avoids the three invisible allergens by design. Available at temples, dedicated restaurants (particularly in Kyoto), and some upscale hotels. For travelers with fish and shellfish allergies, this is worth seeking out specifically. Confirm with the restaurant — some modern versions reintroduce non-traditional ingredients.
Dining Etiquette
Communication & Etiquette for Allergic Travelers
In Japan, how you communicate your allergy is inseparable from whether it works. The culture prizes written over verbal, advance over last-minute, specific over general. Understanding this framework is your most powerful safety tool.
Written Over Verbal — Always
In Japanese culture, written communication is more reliable and more respected than verbal. Your Japanese-language allergy card, presented to the kitchen, carries more authority than anything you say out loud. A card that says your allergens in kanji, states the severity clearly, and specifically names dashi, shoyu, and miso by their Japanese terms is the single most effective intervention available. Print multiple copies. Leave one with the kitchen every time.
Advance Notice Is Non-Negotiable
For any sit-down restaurant, especially kaiseki, omakase, sushi, or ryokan dining — communicate your allergy at the time of booking, in Japanese, in writing. Japanese restaurant culture plans menus days in advance. A request that arrives at the table cannot be accommodated the way a request made 48 hours prior can. An unexpected allergy disclosure on the night may result in a very apologetic but very unhelpful response.
Accept a Decline with Gratitude
If a restaurant cannot accommodate your allergy, they will often politely decline your reservation or suggest you order around the issue. This is omotenashi — genuine care — expressed as honesty rather than false assurance. A restaurant that declines is protecting you. One that says "probably fine" without checking is the greater risk. Thank the restaurant that declines and find one that confirms. Both responses deserve equal respect.
The Language of Severity
The phrase 「死ぬほど危険です」 (life-threatening danger) on your card matters enormously. Japanese culture is acutely responsive to communicated severity. Many Japanese people are unaware that food allergies can be fatal — allergy culture is less publicly visible in Japan than in the UK, US, or Australia. A card that clearly states the medical consequence — not just the ingredient to avoid — changes how kitchens respond to your request.
Tipping note: Japan has a no-tipping culture — offering a cash tip can be misunderstood or even considered rude. The equivalent is expressed through genuine verbal thanks, a bow, or a short note left at the table. If a kitchen goes to exceptional lengths for your allergy, a written thank-you in Japanese left with the waiter is a meaningful and culturally appropriate acknowledgment.
Languages
Languages Spoken
JapaneseGenerate card in Japanese →
Create now is the only language that works in a Japanese kitchen. English functions at concierge desks and international hotel restaurants — it does not reach the cook at the ramen counter, the izakaya kitchen window, or the ryokan cook's station. Unlike South Africa, where multiple languages add meaningful safety margin, Japan has a single critical language and everything else is supplementary.
Language
Primary regions
Where you'll hear it
% Use
Nationwide — all regions, all venue types
All kitchens, all menus, all safety communication. Kanji and hiragana allergen names on your card are non-negotiable.
~99%
🌍 English
International hotels, airport terminals, major tourist corridors — Tokyo, Osaka, Kyoto
Front-of-house and booking communication only. Not reliable in kitchens. English does not reach the chef even where waitstaff speak it fluently.
~30% (tourist areas)
Tourist-heavy areas — Shinjuku, Akihabara, Dotonbori, Kyoto Gion
Growing in restaurants catering to Chinese tourism. Supplementary only — cannot substitute for Japanese in any kitchen context.
~4% (tourist zones)
🇰🇷 Korean
Osaka Tsuruhashi, Tokyo Shin-Okubo (Koreatown), some Kyushu areas
Some Korean-speaking restaurant staff in specific neighbourhoods. Entirely supplementary — no safety value for allergy communication outside Japanese.
~2%
Okinawa — primarily older speakers
Cultural and ceremonial contexts only. All hospitality and food communication in Okinawa uses standard written Japanese. Your card is equally valid here.
<1%
Card strategy — Japanese only: English alone covers formal dining in international hotels. For every other venue — local restaurants, izakayas, ramen shops, soba counters, ryokan kitchens — a Japanese-language card shown directly to kitchen staff is the only communication that reliably works. The card's value is that it bypasses the front-of-house language layer entirely and reaches the person actually preparing your food. Generate your card in Japanese; carry it in every meal interaction.
Dialect note: Japan has significant regional spoken dialects — Osaka-ben in Kansai, Hakata-ben in Kyushu, Okinawan-inflected Japanese in the south. None of this affects your card. Written Japanese (the kanji and hiragana on your card) is standardised nationwide and is read identically in every region. Spoken phrases in the Phrases section use standard Japanese (Hyōjungo / 標準語), which is universally understood in any formal or semi-formal context.
Reading Labels
Allergen Kanji & Label Guide
Japan's allergen labeling system uses kanji characters. Memorizing the kanji for your specific allergens — or having them saved on your phone — lets you read a label or menu in seconds without translation apps. The characters below are the ones that matter most.
魚
sakana / dashi
Fish — also watch for だし (dashi), かつお (bonito), にぼし (sardine)
大豆
daizu / soy
Soy — also 醤油 (shoyu), 味噌 (miso), 豆腐 (tofu)
小麦
komugi / wheat
Wheat — in 醤油, パン (bread), うどん (udon), ラーメン
そば
soba / buckwheat
Buckwheat — acute anaphylaxis risk; also 蕎麦粉 (sobako)
卵
tamago / egg
Egg — also 玉子 (tamago), マヨネーズ (mayonnaise)
えび
ebi / shrimp
Shrimp/prawn — mandatory labeled
かに
kani / crab
Crab — mandatory labeled; also 蟹 (kanji form)
ごま
goma / sesame
Sesame — recommended not mandatory; also ごま油 (oil)
乳
nyū / milk
Dairy/milk — mandatory labeled; also バター (butter), チーズ (cheese)
くるみ
kurumi / walnut
Walnut — added to mandatory list in 2023
落花生
rakkasei / peanut
Peanut — also ピーナッツ (pīnattsu); mandatory labeled
アレルギー
arerugī
Allergy — the word to look for on labels and menus
Label reading tip: On packaged food, look for the allergen declaration section labeled 「アレルギー表示」 (arerugī hyōji) — usually boxed at the bottom of the ingredient panel. The 8 mandatory allergens appear in bold or in a separate allergen summary line. Cross-contact warnings appear as 「本製造ラインでは〇〇を含む製品を生産しています」 ("This production line also processes products containing ○○").
Dashi identification on menus: Dashi does not appear as "fish" on a menu. It appears as だし, 出汁, かつおだし (katsuodashi), にぼしだし (niboshi dashi), or simply as a word in the broth description. If a menu item involves any broth, soup, sauce, or marinade, ask specifically: 「だしに魚が入っていますか？」 ("Does the dashi contain fish?")
Communication
Essential Safety Phrases
Japanese must be used — English is insufficient in most restaurant kitchens outside central Tokyo. These phrases are designed to be shown on your phone or printed card, not spoken from memory. Show the kanji directly to kitchen staff.
Scenario 01
Declaring Your Allergy
JPAll venues
私は[allergen]に重篤なアレルギーがあります。食べると命に関わります。
Watashi wa [allergen] ni jūtoku na arerugī ga arimasu. Taberu to inochi ni kakawari masu.
"I have a severe allergy to [allergen]. Eating it can be life-threatening."
JPFish-specific
魚、特にだし（かつおだし・にぼしだし）にアレルギーがあります。
Sakana, toku ni dashi (katsuodashi / niboshidashi) ni arerugī ga arimasu.
"I am allergic to fish, especially dashi stocks (bonito and sardine-based)."
JPSoy + wheat
醤油と味噌と大豆製品にアレルギーがあります。食べると危険です。
Shōyu to miso to daizu seihin ni arerugī ga arimasu. Taberu to kiken desu.
"I am allergic to soy sauce, miso, and soy products. It is dangerous to eat."
Scenario 02
Asking About Dashi
JPCritical question
この料理にだしが使われていますか？だしに魚が入っていますか？
Kono ryōri ni dashi ga tsukawarete imasu ka? Dashi ni sakana ga haitte imasu ka?
"Is dashi used in this dish? Does the dashi contain fish?"
JPSoba cross-contact
このお店ではそばを使っていますか？そばアレルギーがあります。
Kono omise de wa soba o tsukatte imasu ka? Soba arerugī ga arimasu.
"Does this restaurant use soba/buckwheat? I have a buckwheat allergy."
Scenario 03
Confirming Safely
JPVerification
このメニューに[allergen]は入っていませんか？シェフに確認していただけますか？
Kono menyū ni [allergen] wa haitte imasen ka? Shefu ni kakunin shite itadakemasu ka?
"Does this menu item contain [allergen]? Could you check with the chef?"
JPAdvance booking
予約の際にアレルギーについてお伝えしたいのですが、よろしいでしょうか？
Yoyaku no sai ni arerugī ni tsuite o-tsutae shitai no desu ga, yoroshii deshō ka?
"I would like to communicate about my allergy when making a reservation — is that possible?"
Emergency
Call for Help
JPEmergency
119番に電話してください。アレルギーショックです。エピペンが必要です。
Hyaku-jū-kyū-ban ni denwa shite kudasai. Arerugī shokku desu. Epipenu ga hitsuyō desu.
"Call 119. I am having anaphylactic shock. I need an EpiPen." — Show this to any person nearby.
JPCarry always
私はアナフィラキシーを起こしています。すぐに救急車を呼んでください。エピペンを使用してください（太ももに注射）。
"I am having anaphylaxis. Call an ambulance immediately. Use the EpiPen (inject into the thigh)." — Print this and carry in wallet.
CAA Official Tool: Japan's Consumer Affairs Agency publishes a free official Food Allergy Communication Sheet at caa.go.jp — bilingual (English/Japanese), printable, and designed for exactly this purpose. Download and have it on your phone. It covers the 8 mandatory allergens and allows you to circle your specific triggers.6
Pre-Trip Preparation
Allergy-Specific Packing List for Japan
Japan is one of the world's safest countries in terms of emergency medicine and civic infrastructure — but also one of the hardest for language-specific allergy communication outside tourist corridors. Preparation closes that gap entirely.
💊 Medical Essentials
✓
Two epinephrine auto-injectors — Japan is safe, but carry two always
✓
Doctor's letter confirming allergy and prescriptions — in English; Japanese translation is a bonus
✓
Keep EpiPens in original packaging with your name on the label at all times through customs
✓
Antihistamines (cetirizine or similar) for mild reactions
✓
Oral corticosteroids if prescribed
✓
Bilingual anaphylaxis action plan — Japanese + English for emergency responders (119 operators may have limited English)
🪪 Communication Tools
✓
Prepared Travel Japanese allergy card — phone format (show), wallet format (leave with kitchen), letter format (ryokan advance communication)
✓
CAA Official Allergy Communication Sheet — download free from caa.go.jp, circle your allergens
✓
Card must name dashi, shoyu, and miso by Japanese term — not just "fish," "wheat," and "soy"
✓
Google Translate camera mode downloaded offline for Japanese — supplement, not replacement, for your card
✓
Emergency numbers: 119 (ambulance/fire), 110 (police), 112 (all emergencies, mobile)
🧳 Japan-Specific Habits
✓
Email restaurants 48–72 hours before your booking — in Japanese — with your allergen list attached
✓
Identify the nearest konbini (7-Eleven, Lawson, FamilyMart) on arrival — your safest fallback always
✓
For ryokan stays: communicate at booking. Ryokan cuisine is fixed — you cannot modify it on the night of service
✓
Look up chain restaurant allergen charts online before visiting — Gusto, Denny's Japan, Royal Host publish full charts
✓
If wheat-allergic: bring a small bottle of certified tamari (wheat-free soy sauce) from home for use at sushi restaurants
✓
Shojin ryori (Buddhist cuisine) is often the safest restaurant type — seek it out in Kyoto specifically
Contextual Intelligence
Ryokan, Omakase & High-End Dining
Japan's most extraordinary dining experiences — ryokan kaiseki, omakase sushi, and traditional teahouse meals — are also among the most allergen-complex and least modifiable on the night. This section is for anyone planning these experiences, which should be most travelers who come to Japan.
The advance notice rule is absolute in Japanese high-end dining
Kaiseki menus are composed days before service. Omakase chefs source ingredients for the specific menu they have planned. A ryokan cook has ordered provisions for the week. An allergy disclosure that arrives at the table creates an impossible situation — and the response, however gracious, will be inadequate. Communication at booking, in writing, in Japanese is not polite — it is structural. It is the only intervention that actually works.
Ryokan (Traditional Inn) Dining
Ryokan hospitality is among the most genuine in the world — and ryokan kitchens are extraordinarily committed to making their guests feel cared for. That care, however, operates through planning, not improvisation.
The ryokan kaiseki dinner (included in most stays) is a multi-course meal composed for the season and the anticipated guests. Contact the ryokan at time of booking via email — not phone — in Japanese, naming your specific allergens and asking for written confirmation that the kitchen has received your requirements. If dashi is your allergen, ask whether they can use kombu dashi (seaweed) as an alternative base.
The email to write at booking Subject: アレルギーについてのご相談 (Allergy inquiry). State your allergens in Japanese, ask if the kitchen can accommodate, request written confirmation. This is normal practice at quality ryokan and will be handled with care.
Omakase Sushi
Omakase ("I leave it to you") is Japan's most celebrated dining format — and one of the hardest to navigate with allergies. The experience is defined by the chef's complete control over the menu. Requesting modifications at the counter is a significant cultural imposition.
The solution is not to avoid omakase — it is to communicate before you go. Email the restaurant at booking. Many Tokyo and Kyoto omakase chefs have international clientele and have accommodated allergies before. A chef who knows your allergens 48 hours out can construct a beautiful, specific menu around your needs. A chef told at the counter cannot.
On shellfish allergy Many high-end sushi restaurants use the same surfaces and knives for shellfish and fish. If your shellfish allergy involves cross-contact sensitivity, ask specifically about equipment sharing at booking — this is a detail the restaurant can address in advance but not at service.
Shojin Ryori — The Allergen-Friendly Path
Shojin ryori is Japan's Buddhist temple cuisine — entirely plant-based, with no meat, fish, or dashi by design. It uses kombu and shiitake-based stocks instead of katsuo-dashi, making it the primary dining category that avoids the three invisible allergens structurally.
Available at temple restaurants throughout Kyoto (Tenryuji, Daikakuji, Ryoanji have associated dining), dedicated shojin ryori restaurants in Tokyo (Daigo, Bon), and some ryokan that offer it as an alternative track. Always confirm that the version being served is traditional — some modern interpretations reintroduce non-traditional ingredients.
Still contains Tofu (soy), sesame (in dressings), wheat (in some preparations). Not a universal safe option — but the fish and shellfish allergen risk is designed out of the cuisine, and that alone makes it exceptional for many travelers.
Convenience Store Culture at Its Best
Japan's konbini culture is globally unique in its quality and reliability. 7-Eleven Japan, Lawson, and FamilyMart carry fresh, high-quality prepared food with meticulous allergen labeling — a direct consequence of the Food Labeling Act. In any Japanese city or town, a konbini is almost always within walking distance.
For a multi-allergen traveler in Japan, the konbini is not a compromise — it is a legitimate dining strategy. Onigiri with allergen labels checked, plain salads, plain rice, grilled chicken with confirmed seasonings. Building at least one konbini meal per day into your travel plan removes pressure from every restaurant interaction.
Konbini allergen reading Look for the boxed allergen section (アレルギー表示) at the bottom of the label. The 8 mandatory allergens are listed in bold. Cross-contact warnings appear as a separate sentence beneath the allergen list.
Emergency
Emergency Infrastructure
Japan has one of the world's most capable emergency medical systems. Response times in major cities are fast, hospitals are well-equipped, and anaphylaxis protocols are understood. The primary challenge for foreign travelers is language — not capability.3
119
Ambulance & Fire Emergency — Japan National
119 dispatches both ambulance and fire. Response in major cities typically under 10 minutes. Operators may have limited English — your bilingual anaphylaxis symptom card is essential for communicating with responders on arrival.
Police: 110 · All emergencies (cellular): 112 · Japan Visitor Hotline: 050-3816-2787 (24hr, multilingual)
✓ Emergency system note: Japan's ambulance services do not charge per-call fees. Emergency care at public hospitals is available to foreign visitors; costs can be significant without insurance. Comprehensive travel insurance with medical evacuation coverage is strongly recommended.
St. Luke's International Hospital
9-1 Akashi-cho, Chuo-ku, Tokyo
Private international — full English-language emergency services. Best first choice for foreign tourists in Tokyo requiring emergency care.
Tokyo · InternationalTokyo Medical and Surgical Clinic
32 Shiba Koen 3-chome, Minato-ku, Tokyo
International clinic — English-speaking physicians, allergy consultation available. Not a full emergency hospital; for acute anaphylaxis call 119 first.
Tokyo · International ClinicOsaka University Hospital
2-15 Yamadaoka, Suita, Osaka
Academic hospital — full emergency capability. Limited English support; bring your bilingual card for responders. Best equipped public option in Kansai.
Osaka · AcademicKyoto University Hospital
54 Kawaharacho, Shogoin, Kyoto
Academic hospital — full emergency. Kyoto's best-equipped hospital. For kaiseki dining emergencies near the historic district.
Kyoto · AcademicHokkaido University Hospital
North 14, West 5, Kita-ku, Sapporo
Academic hospital — full emergency. Sapporo's primary emergency facility. Fast response in the city; rural Hokkaido distances can be significant.
Sapporo · AcademicFukuoka University Hospital
7-45-1 Nanakuma, Jonan-ku, Fukuoka
Academic hospital — full emergency. Best equipped in Kyushu. Tonkotsu ramen capital — fish-allergic travelers lower risk, but soy/wheat still ubiquitous.
Fukuoka · AcademicJapan Visitor Hotline: 050-3816-2787 operates 24 hours, in multiple languages, to assist foreign visitors in emergencies — including directing you to the nearest English-capable medical facility. Useful for non-acute allergy situations requiring medical consultation. For acute anaphylaxis: call 119 immediately.
Preparation
Bringing Your EpiPen to Japan
EpiPens are legal in Japan, approved by Japan's PMDA (pharmaceutical regulatory authority), and are not a controlled substance. Import for personal use is permitted — but documentation requirements are stricter than in most Western countries.7
✓ Permitted: EpiPens (エピペン, epipenu) are approved and sold in Japan by prescription. Legal to import for personal use under the Pharmaceutical Affairs Law. Known to customs officers — not treated as a controlled substance.
→Japan allows a 1-month supply of prescription devices without an import certificate. For a standard 2-EpiPen supply on a short trip, no Yakkan Kakunin-sho is typically required — customs officers are familiar with the device.
→If bringing more than 2 units, applying for a Yunyu Kakunin-sho (輸入確認証) — Japan's import certificate — at least 3–5 weeks before travel is strongly recommended. Apply via the Ministry of Health, Labour and Welfare at mhlw.go.jp.
→Carry a doctor's letter confirming your allergy, the device, and its purpose — in English with Japanese translation if possible
→Keep auto-injectors in original pharmacy packaging with your name on the label
→Declare medication at customs if asked and produce documentation immediately
→In-country replacement: EpiPens are available at major Japanese pharmacies (Matsumoto Kiyoshi, Sundrugと) by Japanese prescription. Foreign prescriptions are not accepted. Bring your full supply from home — do not plan on replenishment in Japan.
Confidence: Medium-High. EpiPen import rules are well-established; travelers routinely enter Japan with 2–4 units without issue. The 1-device-without-certificate rule in some documentation refers to medical devices broadly — in practice, EpiPens are not questioned. Verify current rules with the Japanese Embassy or MHLW before travel, as pharmaceutical regulations can change.7
Regulation
Allergen Labeling Law
Japan has one of Asia's most rigorous packaged-food allergen labeling systems — and zero regulatory requirement for restaurant disclosure. That gap is where allergic travelers are most at risk.2
Legislation: Japan's Food Labeling Act (食品表示法, 2015) and Consumer Affairs Agency (CAA) standards mandate allergen labeling on all packaged processed food. As of 2023, the mandatory list covers 8 specific ingredients: egg (卵), milk (乳), wheat (小麦), buckwheat (そば), peanut (落花生), shrimp (えび), crab (かに), and walnut (くるみ). A further 20 ingredients carry a recommended (but not mandatory) labeling designation, including soy, sesame, and fish. Restaurants, izakayas, food stalls, and any food sold unpackaged carry zero legal allergen disclosure obligation.2
Packaged goods — retail & konbini
Mandatory declaration of 8 allergens. Meticulous labeling — one of the most reliable packaged-food systems in Asia. Cross-contact warnings are common and standardized. Soy and sesame may appear in "recommended" section only — always check full ingredient list.
Restaurants & izakayas
No legal requirement. Entirely at venue discretion. Your Japanese-language card and verbal confirmation are your only tools. Chain restaurants voluntarily publish allergen charts — use them.
Street food & vendors
No requirement. Minimal ingredient knowledge at stalls. Shared cooking surfaces and frying oil are ubiquitous. Not recommended for severe allergy travelers — high cross-contact risk across every common allergen.
Ryokan & hotel catering
International hotels declare allergens voluntarily. Ryokan accommodate extremely well with advance notice — but not at the table. Premium properties have the most reliable systems. Communicate at booking in writing, in Japanese.
Upcoming changes (2025–2026)
Cashew nuts (カシューナッツ) proposed for mandatory label status. Pistachios proposed for recommended tier. Transitional period underway. Watch CAA updates at caa.go.jp for current mandatory list.2
Soy — recommended, not mandatory
Soy (大豆) is on the recommended list despite appearing in virtually every Japanese dish through miso and shoyu. This means soy may not appear in the allergen summary box on some products — always read the full ingredient list, not just the allergen summary.
⚠ Regional product note — Japanese shoyu (醤油) protein profile: Japanese soy sauce is fermented for 6–18 months using a koji mold process — significantly longer than Chinese soy sauce or most international equivalents. This extended fermentation degrades wheat proteins substantially, which is why shoyu's wheat risk differs between IgE-mediated wheat allergy (where even degraded proteins can trigger a reaction) and celiac disease (where the question is whether sufficient gluten peptides survive — most celiac organizations recommend avoiding standard shoyu entirely). For soy allergy specifically: the fermentation process alters soy proteins in ways that change the sensitization profile. Some highly soy-allergic individuals react differently to Japanese fermented shoyu than to raw soy or Chinese soy sauce. This is not a green light — it means the risk profile is specific and unpredictable for each individual. Discuss your specific sensitivity with your allergist before travel if soy is your allergen. Tamari (たまり) — brewed with little or no wheat — is the standard wheat-reduced alternative, but confirm the label as some brands add wheat.8
Community Reports
Traveler Voices
Real experiences from food-allergic travelers who have navigated Japan. This section grows with every report submitted — your experience matters to the next person planning this trip.
I emailed the ryokan in Hakone three weeks before arrival with a detailed allergen list in Japanese. The chef met me on arrival and walked through every dish he had planned. It was one of the most thoughtful meals of my life — and completely safe.
Emma R. · Fish + shellfish allergy · Hakone, 2025
Konbini were my daily lifeline. 7-Eleven Japan has better allergen labeling than most restaurants back home. I ate very well, very safely, and very cheaply. Don't underestimate them — they're genuinely good food.
Marcus T. · Peanut + tree nut · Tokyo, 2024
The soba cross-contact caught me off guard. I went to a tempura restaurant that also served soba noodles and had a reaction. The fryer was shared. I hadn't thought to ask. Now I ask first thing, every time, before I sit down.
Yuki W. · Buckwheat allergy · Kyoto, 2024
Traveled to Japan with food allergies?
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References & Transparency
Sources, Citations & Data Confidence
Every claim marked with a superscript number is sourced below. Safety-critical information deserves honest attribution and epistemic labeling.
View source citations
▼
1
Menu Decoder / AppForgeLabs. "How Do You Eat Safely With Food Allergies in Japan?" (2025). Structural analysis of dashi, shoyu, and miso as embedded allergen vehicles. References Yoshisue et al. (Pediatric Allergy and Immunology, 2024) on food allergy prevalence doubling in Japan. menu-decoder.appforgelabs.com
2
Japan Consumer Affairs Agency (CAA). Food Labeling Act (食品表示法) — Food Labeling Standards, amended March 2023 and March 2025. Mandatory allergen list: egg, milk, wheat, buckwheat, peanut, shrimp, crab, walnut. Recommended list: 20 items including soy and sesame. Cashew nuts proposed for mandatory tier (2025). caa.go.jp
3
Japan Handbook. "Food Allergies in Japan: Reading Labels and Asking About Ingredients." (2025). Emergency care guidance, official CAA communication sheet, 119 system. japanhandbook.com
4
Tokyo Metropolitan Government Bureau of Public Health. "Measures to Prevent Food Allergy Incidents for Eating and Drinking Establishments." Tokyo Food Safety Information Center — allergen guidance for restaurants, including shared cooking equipment risks. hokeniryo1.metro.tokyo.lg.jp
5
Boutique Japan. "Traveling to Japan with Food Allergies and Dietary Restrictions." Venue-level guidance on reservation decline culture and advance communication norms in Japanese restaurants. boutiquejapan.com
6
Japan Consumer Affairs Agency (CAA). Food Allergy Communication Sheet — free bilingual (English/Japanese) printable tool for allergic travelers. Available at caa.go.jp
7
Japanese Embassy in the United States / U.S. Embassy in Japan. "Bringing Medications into Japan." Ministry of Health, Labour and Welfare (MHLW) personal import rules. EpiPen (epinephrine auto-injector) approved and available in Japan since 2017 (PMDA). Yunyu Kakunin-sho (import certificate) rules for quantities exceeding 1-month supply. us.emb-japan.go.jp · mhlw.go.jp
8
Label-Bank.com (2024–2025 newsletter series). Japanese Food Labeling Standards amendments and shoyu fermentation protein profile distinctions. Yoshisue et al. (Pediatric Allergy and Immunology, 2024) — Japan clinical allergy prevalence data: egg and milk predominant in children; wheat third; peanut proportionally lower than Western populations. CAA 7th Advisors' Meeting on Food Allergen (January 2025) — cashew proposed mandatory. label-bank.com · caa.go.jp
Data confidence ratings
▼
| Section | Confidence | Source / Notes |
|---|---|---|
| Food Labeling Act mandatory allergens | ● HIGH | Primary CAA legislation; peer-reviewed PMC studies; confirmed March 2023 amendment |
| Healthcare infrastructure | ● HIGH | WHO; OECD health system assessments; hospital network documentation |
| Dashi, shoyu, miso structural risk | ● HIGH | Multiple peer-reviewed and practitioner sources; Tokyo Metropolitan Government guidance |
| Emergency numbers and response | ● HIGH | Japan National Police Agency; Fire and Disaster Management Agency confirmed |
| EpiPen import rules | ● MEDIUM | MHLW and Embassy guidance confirmed — verify before travel; regulations can change |
| Allergen prevalence scores | ● MEDIUM | Yoshisue et al. (2024); cuisine composition analysis; Tokyo Food Safety Center data |
| Venue tier assessments | ● MEDIUM | Traveler reports and practitioner guidance — assessed, not audited |
| Regional risk ratings | ● MEDIUM | Regional cuisine research; demographic data — assessed, not field-verified across all regions |
| Upcoming label changes (cashew) | ● MEDIUM | CAA draft proposal (Jan 2025); not yet finalized at time of writing — verify at caa.go.jp |
| Shoyu fermentation protein profile | ● MEDIUM | Label-bank.com; general fermentation science; individual reactivity unpredictable — clinical guidance required |
| Japan clinical allergy prevalence (peanut/tree nut rarity) | ● MEDIUM | Yoshisue et al. (2024); CAA national survey data; egg/milk/wheat dominant in Japanese clinical population |
| Traveler voice quotes | ● MEDIUM | Community-submitted; represent individual experiences and may not generalize |
This page is a living document. Japan's allergen labeling system is one of the most actively evolving in the world. Cashew and pistachio additions, restaurant disclosure debates, and konbini labeling improvements all happen on an annual cycle. Last verified March 2026.
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