Last updated on October 2, 2025
Japan imposes strict controls on importation of narcotics, psychotropics and certain stimulants even when prescribed abroad; many controlled medicines require advance permission from Japan’s Ministry of Health, Labour and Welfare or regional narcotics control office before import. For standard prescription medicines that are not controlled, travellers may usually bring up to a one-month supply for personal use without prior permission, but quantities greater than one month, injectable preparations, or controlled substances require a Yunyu Kakunin-sho (import permit) applied for in advance and possibly translation of prescriptions. Airports and customs strictly enforce these rules; undeclared or improperly documented controlled medicines can be seized and travellers may face refusal of entry or penalties. Consult official MHLW and Japanese embassy guidance before travel and carry original prescriptions and medication packaging.
MHLW guidance current 2023–2025; embassy advisory pages updated as of 2024–2025.