Bringing Your Medication to Japan: Rules, Limits and the Yunyu Kakunin

Packing medication for a trip should feel routine. It can become worrying when you discover that Japan may classify your medicine differently or require paperwork you have never heard of.

The rules depend on the medicine, its ingredients, and the amount you carry. This guide gives a general starting point, but travelers should make the final check against the current guidance from Japan’s Ministry of Health, Labour and Welfare.

When to See a Doctor

Consider seeking medical advice if you are running short of an important medicine or feel unwell after taking it. A doctor will assess your situation and discuss the appropriate next steps rather than assuming that the same product is available in Japan.

In a life-threatening emergency, call 119 for an ambulance. Our clinic provides outpatient care and is not an emergency room.

The One-Month Rule and the Yunyu Kakunin

As a general rule, a traveler may bring up to one month’s supply of prescription medicine for personal use without a Yunyu Kakunin. The Yunyu Kakunin is an import confirmation document that may be required when bringing a larger supply.

This general rule does not override restrictions on particular ingredients. Some medicines may be prohibited or may require a separate process regardless of the quantity. Confirm the current requirements before traveling rather than relying on the rules in your home country.

Prescription and Over-the-Counter Medicines

Prescription medicines and over-the-counter products are treated as different categories, and their limits and paperwork may differ. A product sold without a prescription at home is not automatically treated the same way in Japan.

Check the active ingredients, the quantity, and the current Japanese guidance for each product you plan to carry. For medicines subject to tighter restrictions, see Restricted Medications & Legal Risks (Part 2).

If Your Supply Runs Low

Do not assume that the same brand or formulation will be available in Japan. Our guide to medicines unavailable in Japan (Part 1) explains why familiar products may be difficult to replace.

A doctor will assess your current condition and medication needs before discussing whether a prescription in Japan is appropriate. The decision depends on the consultation; an identical replacement cannot be assumed.

Fees & Insurance

Care at both clinics is self-paid. For current information, see the fees section on the Kyoto clinic page or the Osaka Namba clinic page. Whether your travel insurer reimburses a medication-related visit depends on your policy.

How to Visit

Contact the clinic by WhatsApp or email, or ask your hotel concierge or front desk to help arrange your visit. Bring your passport and travel-insurance policy with you.

Travelers can consult Dr. Coming International Clinic Kyoto Station or Dr. Coming International Clinic Osaka Namba.

Medication and regulatory information in this article is current as of August 2026.