Bringing Opioid Painkillers to Japan: What the Rules Require

Bringing opioid painkillers to Japan - morphine, fentanyl, oxycodone, codeine, or tapentadol - requires advance permission from the Narcotics Control Department (NCD) regardless of how much you're carrying. These drugs are classified as narcotics, which puts them on a stricter track than ordinary prescription medication: there's no personal-use quantity that skips the requirement, no mailing it ahead of yourself, and no having someone else bring it for you. You, the patient, must carry it personally, backed by a medical certificate issued within the last three months that states your specific medical reason. Apply at least 14 days before you travel to the NCD office covering your arrival airport.

Japan's import system has tiers. Ordinary prescription drugs get a 1-month supply without any certificate. Psychotropics like Xanax or Ambien get individual quantity thresholds - stay under the limit and no paperwork is needed. Narcotics are a separate, stricter category: morphine, fentanyl, oxycodone, codeine, and tapentadol all require NCD advance permission no matter the amount, with no exemption threshold at all.

Tapentadol and codeine sit in this same narcotic category, so the same rules apply if either is part of your pain management - see can you bring codeine to Japan for that specific case. Tramadol is the one common opioid-family painkiller not currently classified as a narcotic here, so it follows standard import rules instead - but confirm its current status before you rely on that; see can you bring tramadol to Japan.

The application isn't a formality you can rush at the airport. You need a medical certificate issued within the last three months, stating your specific medical reason - not a generic prescription, but a document naming the condition and the drug. Alongside it, submit a drug list with doses, your doctor's signature, and photos of the packaging. Two rules make this different from other import paths: the medication cannot travel by mail, and it cannot be carried by anyone other than the patient it's prescribed for - not a travel companion, not a family member picking it up for you.

This runs alongside the broader 輸入確認書 import certificate system used for other medications above their allowance - see our import certificate guide if you're also carrying an injectable or a psychotropic over its threshold. For how prescriptions and pharmacies work once you're here, see the health guide; if you're relocating rather than visiting, moving to Japan covers what comes after you land. In Tokyo, the pharmacy finder lets you filter for verified English-language support before you need to explain a narcotic prescription at the counter.