Bringing Prescription Drugs to Japan — Yakkan Shoumei

Pseudoephedrine — The Sudafed Surprise

Sudafed, Claritin-D, Allegra-D, Mucinex D, and any "-D" decongestant is BANNED in Japan because they contain pseudoephedrine (also classed as a stimulant precursor).

Americans routinely get caught with Sudafed on arrival. Keep any cold medicine in your carry-on and customs can flag it.

Legal alternatives in Japan:

• Phenylephrine (Sudafed PE in the US — yes, different from regular Sudafed)
• Tylenol Cold
• Japanese cold medicines (Pabron, Lulu, Benza brands) — all available at any drugstore, all pseudoephedrine-free

If you bring congestion products, read the active ingredient label. If it says "pseudoephedrine," leave it. If it says "phenylephrine," you're fine.

Ozempic / Wegovy / Mounjaro — Special Paperwork

GLP-1 receptor agonists (Ozempic, Wegovy, Mounjaro, Saxenda, Trulicity) are legal in Japan with Yakkan Shoumei paperwork if you're bringing more than a month's supply.

For 1 month or less: No paperwork needed. Bring the original prescription bottle and a copy of your US doctor's prescription.

For longer than 1 month: File Yakkan Shoumei (see below).

Storage: Ozempic and Wegovy require refrigeration. Hotels will keep it in the minibar fridge or at the front desk.

The Yakkan Shoumei (薬監証明) Process

This is Japan's "medicine import certificate" for prescription medications exceeding 1-month supply, or any controlled substance.

When required:

• Bringing more than 1 month of ANY prescription med (including antidepressants, heart meds)
• Bringing ANY controlled substance (opioids, benzodiazepines, sleep aids like Ambien)
• Bringing injectable medications in bulk
• Bringing syringes / needles / medical devices

How to apply:

1. 6-8 weeks before your trip, email the Narita Airport Regional Health Bureau (or your arrival airport's bureau):

   • Tokyo / Narita: yakkan@mhlw.go.jp
   • Kansai / Osaka: kiyaku-osakakenkyo@mhlw.go.jp
   • Fukuoka / Nagoya / Sapporo: separate emails on MHLW website

2. Attach:

   • Form (downloadable from mhlw.go.jp/english → import-related)
   • Copy of your prescription (in English is fine)
   • Copy of your passport photo page
   • Travel itinerary (flight + dates)

3. Wait 2-4 weeks for the approved certificate. They email you a PDF.

4. Print the certificate and carry it with your medication when you travel.

5. At Japanese customs, declare the medication and present the certificate. Usually a 2-3 minute review.

Cost: Free. No fees for Yakkan Shoumei.

Common mistake: Americans apply a week before the trip and the paperwork doesn't arrive in time. Apply 6+ weeks out.

What "Over-the-Counter" Means in Japan

Many meds OTC in the US require a prescription in Japan:

• Nasal decongestants with pseudoephedrine: banned (as above)
• Benadryl (diphenhydramine): available OTC, but Japanese brands
• Ibuprofen (Advil): available OTC, smaller doses (100mg vs US 200mg)
• Acetaminophen (Tylenol): available OTC
• Melatonin: prescription-only in Japan (!)
• Dextromethorphan cough suppressant: OTC under different names

If you rely on melatonin for sleep, bring up to 1 month's supply in original packaging. No Yakkan Shoumei needed for normal amounts.

Injectable Medications Beyond GLP-1

Insulin, EpiPen, Humira (adalimumab), other biologics:

• Insulin: Bring more than 1 month = Yakkan Shoumei. Pack in carry-on with TSA-approved cold pack.
• EpiPen: Fine to bring 1-2 pens. Not restricted.
• Biologics (Humira, Enbrel): Refrigeration-required biologics are handled case-by-case. File Yakkan Shoumei to be safe.

All injectables: Keep them in original packaging with pharmacy label showing your name. Customs may ask.

If Customs Stops You

1. Stay calm. Don't attempt to hide or discard the medication — that's a separate legal issue.
2. Show your Yakkan Shoumei (if you have it) and the original prescription.
3. Call the US Embassy Tokyo (03-3224-5000) if detained. They have a duty officer 24/7.
4. Ask for an English-speaking officer. Most customs inspectors at Narita/Haneda have basic English; ask for supervisor if needed.
5. Do not sign anything in Japanese you don't understand. Request an English translation.

Outcome range:

• Best case: Medication confiscated, you proceed. Rebuy in Japan if possible.
• Typical: 1-4 hour detention, medication confiscated, proceed.
• Worst case: Denied entry, sent back on next flight home. Rare but documented.

Prior offenses (even confiscation) can flag your next Japan entry attempt.

Japanese Pharmacy Alternatives

If your US medication is confiscated or ran out, Japanese pharmacies (薬局, yakkyoku) can often provide equivalents, but prescription meds require a Japanese doctor's prescription.

Walk-in clinic fees for foreigners: ¥5,000-15,000 for consultation + ¥2,000-10,000 for meds.

English-capable clinics in major cities:

• Tokyo Medical & Surgical Clinic (Akasaka): Western-trained docs, English
• Meguro Park Clinic (Tokyo): walk-ins welcome
• Osaka Medical Center International Clinic: English staff
• Kyoto Daini Sekijuji Hospital: limited English but has translation service

Recommendation: Bring a written list of your medications, dosages, and generic (not just brand) names in your wallet. If you need a refill, hand the list to any Japanese clinic — they'll match equivalents.

Quick Decision Table

Bottom Line

Japan is not friendly to American medications that are routine at home. Adderall, Vyvanse, Ritalin, Sudafed, and pseudoephedrine are genuinely banned — no exceptions. Bringing more than a month of any prescription requires Yakkan Shoumei paperwork filed 6+ weeks in advance.

For most Americans with standard prescriptions (statins, SSRIs, blood pressure, inhalers), bringing 1-month supply in original bottles + your US prescription is fine, no paperwork needed.

When in doubt, check the MHLW English website or email Yakkan Shoumei staff before you fly. Better to cancel the trip than get caught at Narita.