Complete Guide to Medication Import Rules for Guam Travel
Guam is a popular beach resort destination attracting many Japanese travelers, yet numerous cases of medications being confiscated at customs occur due to unfamiliarity with import regulations. This article explains in detail the medication import rules, prohibited substances, and required documentation for travel to Guam, supervised by a licensed pharmacist.
Basic Medication Import Rules for Guam
As a U.S. territory, Guam follows the regulations set by the U.S. Food and Drug Administration (FDA). However, regulations are relatively relaxed for tourists.
General allowance for quantity:
- Medications for personal use are generally permitted
- Common practice accepts up to 30 days' worth of regular and prescription medications
Pharmacist's note
While Guam follows U.S. federal standards, actual enforcement is slightly more lenient than at Honolulu customs. However, practices vary; having clear documentation of medical necessity is advisable.
List of Permitted Medications
The following table outlines commonly permitted medications for entry to Guam:
| Medication Category | Examples | Permitted | Notes |
|---|---|---|---|
| Cold medications | Acetaminophen (Tylenol), Ibuprofen (Advil) | ✓ Yes | Recognized as OTC remedies |
| Gastrointestinal medications | Loperamide (Imodium), Omeprazole | ✓ Yes | OTC classification |
| Pain relievers | Aspirin, Loxonin S equivalent | ✓ Yes | Japanese OTC brands acceptable |
| Allergy/hay fever medications | Cetirizine, Loratadine | ✓ Yes | OTC drugs |
| Topical skin medications | Mild to moderate steroid ointments, moisturizing creams | ✓ Yes | Small tube size recommended |
| Herbal/traditional medicines | Kakkon-to, Sho-seiryu-to | ✓ Yes | No domestic prescription required |
| Supplements | Vitamin B, Vitamin C, Collagen | ✓ Yes | Not classified as medications |
| Bandages/patches | Protective patches, cooling sheets | ✓ Yes | Medical device equivalent |
Pharmacist's note
Steroid ointments in the mild to moderate range (Class III–IV) are permitted, but strong steroids (Dermovate, flumethasone) require a prescription and medical certificate.
Prohibited and Restricted Medications
The following medications are prohibited or restricted for import into Guam:
| Medication/Ingredient | Reason | Action |
|---|---|---|
| Prescription medications (general) | May be classified as controlled substances | Prescription + medical certificate required |
| Psychotropic medications | Subject to narcotics regulations | Generally prohibited |
| Example: Barbiturates, Benzodiazepines (Reese, Solnax) | Treated as dependency-forming drugs | Special permission required |
| Anti-anxiety medications | Paroxetine (Paxil), Fluvoxamine (Luvox) | SSRI drugs strictly controlled |
| Narcotic pain medications | Morphine, codeine-containing products | Prohibited |
| Certain antihistamines | Phenylephrine hydrochloride combinations | Designated controlled substance |
| Medical eye drops | Antibiotic-containing formulations | Prescription medication classification |
| Prescription androgens | Testosterone preparations | Hormone medication classification |
| Strong steroid ointments | Dermovate, halobetasol | Class V and above |
| Medical antifungal drugs | Griseofulvin, terbinafine | Prescription medication classification |
| Some combination cold medicines | Ephedrine-containing products | Controlled substance |
Pharmacist's note
Psychotropic medications, especially benzodiazepines, risk being treated as equivalent to illegal drug possession even in small amounts. Those with heart conditions or insomnia are advised to consult local medical facilities upon arrival in Guam.
Required Documentation for Prescription Medications
Medical justification documents are essential when bringing prescription medications to Guam.
1. English-Language Prescription
Required information:
- Patient name (matching passport)
- Prescribing physician's signature and date
- Medical diagnosis
- Drug name (both generic and brand names)
- Dosage and instructions
- Physician's address and contact information
How to obtain:
- Request an "English-language prescription" from your physician (approximately ¥1,000–2,000)
- International medical certificate preparation available (¥3,000–5,000)
- Referral letter format also acceptable
2. Medical Certificate (English)
Should include:
To Whom It May Concern:
This is to certify that [Patient Name] requires [Medication Name]
for the treatment of [Diagnosis] during his/her stay in Guam
from [Departure Date] to [Return Date].
Dr. [Physician Name]
[Medical Facility Name]
[Address/Telephone]
3. Original Medication Container (with label)
- Pharmacist-printed patient name
- Dosage instructions label
- Dispensing pharmacy name
Proper Packing of Medications
Appropriate packaging ensures customs officials do not question your medications.
Recommended packing method:
-
Keep in original medication container
- Prescription label (patient name, dosage) visible
- Container undamaged
-
Pack in carry-on luggage (not checked baggage)
- Medications should be in hand luggage
- Liquid medications up to 100ml permitted in carry-on
- Pre-declare if syringes or needles included
-
Organize medical documentation
- Place prescription and medical certificate on top of medications
- Keep with passport
- Consider maintaining electronic backup copies
-
Adhere to quantity limits
- Do not exceed 30 days' supply
- Avoid quantities suggesting medical tourism or resale
Pharmacist's note
Some Guam customs officials have limited medical knowledge. If given an unclear answer, confidently request supervisor review—this approach is often effective.
Where to Obtain Medications in Guam
If you forget medications or need to purchase additional supplies locally:
| Facility | Features | Hours |
|---|---|---|
| ABC Store | Numerous tourist locations; extensive OTC selection; English labeling | Many locations open 24 hours |
| Payless Pharmacy | Accepts prescriptions; licensed pharmacists on staff | Generally 9am–8pm (varies by location) |
| Walgreens | Major U.S. chain; locations throughout | Many 24-hour locations |
| Guam Regional Medical City | Emergency services; higher cost | 24 hours |
How to obtain prescription medications locally:
- Visit tourist-friendly clinic ($150–300 consultation)
- Bring passport and travel insurance card
- English or Spanish-language service available
Pre-Departure Pharmacist Consultation Services
Consult a pharmacist before departure to ensure thorough preparation.
Available consultation resources:
- Your dispensing pharmacy: Free verification of import eligibility
- Travel medicine clinics (university hospitals, infectious disease departments): Medical certificate preparation
- Ministry of Health, Labour and Welfare pharmaceutical safety division: Verification for uncertain cases
- JAL and ANA airline call centers: Verify medication carry-on policies
Frequently Asked Questions
Q1: I take benzodiazepines (Reese, Solnax) for insomnia. Can I bring them to Guam?
A: Even with medical certification and prescription, the U.S. has extremely strict regulations on benzodiazepines. Confiscation at customs is likely. Consult a travel medicine clinic to explore alternatives, such as consulting local medical providers upon arrival.
Q2: Are there restrictions on supplements (vitamins, protein powder)?
A: Non-pharmaceutical supplements are generally permitted, but if containers bear medical claims, they may be reclassified as medications. Packing multiple small individual servings rather than bulk containers is safer.
Q3: Can I purchase many medications in Guam and return with them to Japan?
A: Importing medications into Japan is considered "pharmaceutical import" and is restricted even for personal use. Consult a pharmacist if bringing Guam-purchased medications to Japan.
Q4: What are the rules for medical syringes (insulin, EpiPen)?
A: Medical injections are permitted with medical certification and prescription. However, be cautious that medical injection needles are not classified as medical waste. Pre-contact with Guam Immigration is recommended.
Pharmacist's note
Diabetic insulin self-injection and allergy patient EpiPen self-injection have clear medical justification and relatively straightforward approval. The documentation effectively serves as proof of self-managed medical care.
Summary
Key points for bringing medications to Guam:
- Medications for personal use are generally OK, but prescription and psychotropic drugs require pre-clearance
- Always prepare English-language prescriptions and medical certificates (especially critical for psychotropic medications)
- Prohibited substances: Psychotropic drugs (benzodiazepines, SSRIs), codeine, strong steroids
- Keep medications in original containers in carry-on (not checked) luggage
- Limit quantity to no more than 30 days' supply
- For uncertain cases, consult travel medicine clinics; consider local medical care options
- If medications needed in Guam: ABC Store, pharmacies, and clinics available
Always verify latest information on embassy and Ministry of Foreign Affairs websites, as well as your airline's call center. This article reflects 2026 information; regulations may change without notice.