Traveling in Japan with Food Allergies
Japan’s cuisine is delicious and diverse, but travelers with food allergies face some specific challenges. Many staple ingredients are present in unexpected dishes, and language barriers can complicate communication at restaurants. This guide helps you navigate Japanese dining safely with practical advice for the most common allergies and dietary needs.
Common Hidden Allergens in Japanese Food
Soy (Soya)
Soy is one of the most pervasive allergens in Japanese cuisine. Soy sauce (shoyu) is used as a base flavoring in soups, broths, marinades, dipping sauces, and glazes across almost all categories of Japanese food. Tofu, edamame, miso, and natto are also soy products. Even dishes that seem soy-free (grilled fish, rice) may be seasoned with soy sauce at the end.
Soy allergy in Japan requires careful communication and restaurant selection. Chain restaurants increasingly provide allergen menus; smaller izakaya and ramen shops can be harder to navigate.
Wheat and Gluten
Wheat is present in soy sauce (most Japanese soy sauce contains wheat), ramen noodles, udon, tempura batter, breadcrumbs (panko), and many sauces. Tamari (a wheat-free soy sauce alternative) is available at health food stores and some specialty shops. Certified gluten-free restaurants are rare but increasing in major cities.
Rice, miso soup (check the miso brand), plain grilled fish (yakizakana), edamame, and most sashimi are naturally gluten-free, but hidden soy sauce use means extra vigilance is needed.
Sesame
Sesame seeds and sesame oil appear frequently in Japanese cooking: in dressings, salads, ramen toppings, gyoza seasonings, and as garnishes. Black sesame is commonly used in sweets and bread. Sesame is one of Japan’s 28 mandatory allergen label items for packaged foods (from April 2025).
Shellfish and Fish
Dashi (the foundational stock in Japanese cooking) is almost always made from katsuobushi (bonito/skipjack tuna flakes) or dried small fish (niboshi). This means miso soup, many noodle broths, simmered vegetable dishes (nimono), and sauces are fish-based even when no fish is visible. Kombu (seaweed) dashi is a vegan/fish-free alternative but less commonly used outside Buddhist vegetarian (shojin ryori) restaurants.
Shellfish (shrimp, crab, scallop) allergies are complex because shrimp is a very common ingredient across tempura, ramen, gyoza, and fried rice.
Egg
Eggs appear in tamagoyaki (sweet rolled omelette), many ramen toppings, tempura batter, oyakodon (chicken-egg rice bowl), and most baked goods. Raw egg is sometimes served on dishes like gyudon (beef rice bowl) as an optional topping.
Dairy
Traditional Japanese cuisine is largely dairy-free, but Western-style bakeries, modern cafes, and fusion dishes often include butter, cream, and cheese. Butter is used in some ramen varieties (especially Sapporo-style miso ramen) and many convenience store baked goods.
Tree Nuts and Peanuts
Peanuts are less common than in other Asian cuisines but appear in some salad dressings and Okinawan dishes. Cashews, walnuts, and almonds are used in some modern cafes and bakeries. Sesame is often the greater concern in Japanese cooking, but always check baked goods and Western-influenced dishes.
Japan’s Allergen Labeling System
Japan’s Consumer Affairs Agency requires labeling of 8 tokutei genin (specific allergens) on packaged foods: eggs, milk, wheat, buckwheat (soba), peanuts, shrimp, crab, and walnuts (added 2023). An additional 20 suisho hinmoku (recommended items) including sesame, beef, pork, chicken, and tree nuts are labeled by most manufacturers but not legally required.
This system covers packaged foods but does not apply to restaurant dishes. Restaurants are encouraged but not legally required to disclose allergens.
Allergy Communication Cards
Allergy translation cards in Japanese are the most reliable way to communicate specific dietary needs in restaurants. Several organizations produce free printable cards:
- AllergyEats Japan (printable cards for 14 common allergens)
- EqualDex Japan / SelectivelySOCIAL allergy cards
- Japanese translation apps (Google Translate/DeepL) can supplement but should not replace a pre-prepared card for severe allergies
Present your card to restaurant staff before ordering. For severe or anaphylactic allergies, communicating the severity (not just the preference) is important: say or write arerugii ga arimasu, taberu to shinde shimau koto mo arimasu (I have an allergy; eating it could be life-threatening).
Safest Food Choices in Japan
- Plain rice (gohan) and rice balls (onigiri) with simple fillings: Generally soy-free and safe, but check onigiri seasoning.
- Sashimi (raw fish slices): Usually allergen-free if ordered without soy sauce. Confirm with the restaurant.
- Yakitori (grilled chicken on skewers): Often only salted (shio) variety is safe; tare (sauce) versions contain soy sauce.
- Fruit and vegetables: Fresh produce is widely available at supermarkets and convenience stores.
- Convenience store allergen menus: 7-Eleven, FamilyMart, and Lawson publish detailed allergen tables on their websites for each product.
Restaurant Types: Easier vs Harder to Navigate
- Easier: International chain restaurants (McDonald’s, KFC, Subway, Mos Burger) have full allergen menus in English online. Conveyor belt sushi chains (Sushiro, Kura Sushi) publish allergen info. Shojin ryori (Buddhist vegetarian restaurants) are fish/meat-free but may use sesame and soy.
- Harder: Ramen shops (broth almost always contains soy sauce and dashi), izakaya (diverse menu with frequent soy-sauce glazes), small family restaurants (owner may not know all ingredients).
Emergency Preparation
- Carry your own epinephrine auto-injector (EpiPen) if prescribed. Japan has EpiPens available but the prescribing process requires a Japanese doctor visit.
- Know the word for your allergen in Japanese. Carry a laminated card.
- Identify a nearby hospital or clinic before traveling. Many major hospitals in Tokyo, Osaka, and Kyoto have English-speaking emergency services.
- AMDA International Medical Information Center: 03-5285-8088 (Tokyo) for medical referrals in Japan in multiple languages.