Headaches in Japan: OTC Medicine & When to See a Doctor

Headaches are one of the most common complaints among travelers in Japan. Long-haul flights, sudden changes in climate, unfamiliar food, alcohol, dehydration, and accumulated fatigue can all conspire to leave you reaching for pain relief on your first day of sightseeing. Japan has an excellent pharmacy network and reliable medical system, but navigating it without Japanese language skills can be daunting. This guide gives you the practical information you need.

Types of Headaches Common Among Tourists

Tension headaches are the most frequent type. They typically feel like a tight band around the head, often caused by stress, poor posture (common on long-haul flights), or eye strain from screens.

Dehydration headaches are particularly common in Japan's hot and humid summers (June–September) and during long temple-hopping days when you forget to drink water.

Altitude headaches can occur if you visit mountainous areas such as the Japanese Alps or climb Mt. Fuji.

Migraine headaches produce throbbing pain, often on one side of the head, and may be accompanied by nausea, vomiting, and sensitivity to light or sound. Migraines can be triggered by jet lag, disrupted sleep schedules, or unfamiliar foods containing MSG or alcohol (especially sake and shochu).

Caffeine-withdrawal headaches strike travelers who normally consume a lot of coffee but suddenly switch to Japan's ubiquitous green tea or find themselves too busy sightseeing to keep up their usual intake.

Self-Care vs. When to See a Doctor

The table below gives you a quick decision guide.

OTC Medicines Available at Japanese Pharmacies

Japanese pharmacies (薬局, *yakkyoku*) — including chains such as Matsumoto Kiyoshi, Sugi Pharmacy, and Welcia — stock a wide range of headache remedies without a prescription.

Loxonin S (loxoprofen sodium) is a popular NSAID similar to ibuprofen. It is effective for tension headaches and mild migraines. Note: not suitable if you have stomach ulcers or kidney issues.

Bufferin and Eve A are acetaminophen/ibuprofen combination products widely available and familiar to Western travelers.

Naron Ace T contains acetaminophen, aspirin, and caffeine — a classic combination for tension headaches.

Seirogan and ginger-based products can help when headaches are accompanied by nausea.

Bring these medicines to the pharmacist counter — many urban pharmacies have English-speaking staff, and you can point to the product or show symptoms on your phone.

Finding a Doctor in Japan

If OTC medicine is not working or you have red-flag symptoms, seek care at an internal medicine clinic (内科, *naika*). For migraines specifically, a neurologist (神経内科, *shinkei naika*) is ideal.

Translation apps and devices have limited accuracy for medical conversations. We strongly recommend using a clinic that offers English-language consultation. You can search for English-speaking internal medicine clinics near you on Traveler's Hospital.

Estimated Costs at a Japanese Clinic

Japan's universal health insurance system covers citizens and long-term residents, but short-stay tourists pay out-of-pocket unless they hold travel insurance. Costs below are approximate for uninsured patients.