What You Can and Cannot Import: Japanese OTC Medicine Rules

Japanese drugstores sell many non-prescription medicines, but “OTC in Japan” does not mean “freely importable everywhere.” The destination country decides whether a product is considered a medicine, whether its ingredients are permitted, how much counts as personal use, and whether a permit or prescription is required. Customs, the medicines regulator, and the carrier may each apply a different set of rules.

The safest answer is therefore conditional: you may be able to import a modest personal-use quantity of an ordinary Japanese OTC medicine when its ingredients are permitted and the destination’s documentation rules are met. You should not assume that controlled ingredients, prescription-only products, unclear labels, resale quantities, or medicines prohibited by the destination will clear customs.

This guide was reviewed against official government and manufacturer sources on September 4, 2026. It is general purchasing information, not medical or legal advice. Always check the current rule for your destination and read the package insert before use.

The five checks that decide whether a medicine can travel

The product’s Japanese sales category is only the first check. An import decision usually depends on all of the following:

1. Exact active ingredients. A destination may control an ingredient that is sold without a prescription in Japan.
2. Destination classification. A Japanese OTC drug can be an unapproved, prescription-only, controlled, or otherwise regulated drug elsewhere.
3. Quantity and purpose. Personal-use allowances do not cover commercial resale simply because the order is addressed to an individual.
4. Documentation. Original packaging, an invoice, an ingredient list, a prescription, or a doctor’s letter may be requested.
5. Transport acceptance. A medicine may be legally possessable yet rejected by a postal operator or courier because of liquids, aerosols, alcohol content, temperature control, or dangerous-goods rules.

If any one of these checks fails, an item may be held, returned, confiscated, or referred for regulatory review. A successful delivery in the past does not guarantee a future shipment.

Quick import decision table

“Personal use” is not a universal number. It is a legal and factual category. Customs may consider quantity, dosage directions, order frequency, recipient, packaging, and whether the goods appear intended for resale.

Japan’s OTC categories do not transfer across borders

Japan groups non-prescription medicines by the level of attention and professional guidance considered appropriate for domestic sale. A manufacturer page may identify a product as a Category 2 or Category 3 OTC medicine in Japan. That tells you how it is sold under Japanese rules; it does not register the item in Korea, the United States, Singapore, Malaysia, the Philippines, or an EU country.

The same brand can also contain different products with different legal status. “Loxonin” is a useful example: some external-use Loxonin products are sold as Japanese OTC medicines, while other products bearing the name may be prescription or medical-use products. Match the complete product name, strength, dosage form, package, and active ingredient. Never use the brand name alone as evidence that an item is importable.

The same warning applies to formulations. A tablet, powder, patch, lotion, and liquid from one brand can contain different ingredients. A country’s decision about one format does not automatically cover another.

Destination rules: where shoppers most often make mistakes

South Korea

Korea Customs Service publishes a personal-use benchmark for medicines: up to six bottles, or—when more than six bottles are involved—an amount corresponding to a three-month course under the product’s directions. This is not a promise that every product within that quantity will be admitted. The customs guidance separately identifies products that remain subject to requirements, including items prohibited or flagged by the Ministry of Food and Drug Safety, goods with unclear outer-package ingredient information, and certain ingredients.

Korean shoppers should use the current Korea Customs personal-use guidance rather than relying only on a store tag or a social-media summary. If the medicine contains a narcotic or psychotropic substance, the MFDS controlled-medication guidance says advance approval is required for a person entering Korea with it, regardless of nationality.

The six-bottle benchmark does not convert a resale order into personal use. Nor does it override ingredient restrictions. Keep the product’s original box and leaflet, and make sure the ingredient panel is readable.

United States

The U.S. Food and Drug Administration states that importing foreign unapproved drugs generally violates federal law. A medicine that is lawfully sold in Japan can still be “unapproved” in the United States because FDA has not approved that exact product or because it does not comply with an applicable U.S. OTC monograph.

FDA has a personal importation policy, but the agency emphasizes that the policy is discretionary and does not create a legal right to import an unapproved drug. The circumstances are narrow and fact-specific. A routine Japanese cold medicine should not be described as automatically acceptable merely because it is for personal use or is within a commonly cited supply period.

If you are a foreign visitor carrying medication for your own use, FDA provides separate documentation guidance. Controlled substances also fall under Drug Enforcement Administration rules. For mailed consumer orders, the safest approach is to verify the exact product and ingredient status before purchase; do not assume customs will make an exception after arrival.

For a broader border overview, see Shipping Japanese Cosmetics to the US, while remembering that medicines are regulated differently from ordinary cosmetics.

Singapore

Singapore’s Health Sciences Authority provides an online tool and guidance for bringing personal medication into the country. HSA says that, where no approval is required and the medication is not prohibited, up to three months’ supply may be brought for personal use. It also sets documentation and original-packaging expectations and does not allow quantities above that limit under the ordinary personal route.

Use the HSA personal-medication page to check whether approval is needed. HSA also restricts bringing medication for someone other than the traveller, except in the circumstances it describes for immediate family members. Do not assume that an OTC label from Japan removes these conditions.

Singapore’s rules for carrying a medicine while travelling and rules for commercial supply are different. Ordering stock for resale, a shop, or a clinic is not covered by a traveller’s personal-use allowance.

Malaysia

Medicinal products in Malaysia are overseen by the National Pharmaceutical Regulatory Agency. Before ordering, check the exact name and active ingredients against the current NPRA product-status resources and review Royal Malaysian Customs requirements for the shipment.

Do not use a Japanese Category 2 or Category 3 label as proof of Malaysian registration. If an item is unregistered, contains a controlled substance, or is ordered in a commercial-looking quantity, a personal parcel can require additional review or be refused. Because the precise personal-use treatment can depend on the product and mode of entry, confirm uncertain cases directly with NPRA and Customs before dispatch.

Philippines

The Philippine Bureau of Customs lists drugs and chemical products among regulated goods. Its restricted and prohibited items guidance says regulated goods require the necessary permit, clearance, licence, or other requirement from the responsible government agency.

The Bureau’s parcel guidelines also explain that medicines claimed to be for personal use may still require a permit when the quantity exceeds the allowable limit. The Philippine FDA, rather than the Japanese manufacturer or overseas seller, is the authority for local drug regulation.

Keep an itemized invoice and the original packaging. If Customs or the carrier asks for FDA documentation, do not substitute a Japanese product page or a receipt as though it were a Philippine permit.

European destinations and the United Kingdom

Europe is not one personal-medicine import zone. EU medicines law is harmonized in important areas, but personal postal import rules and enforcement can differ by member state. The United Kingdom is outside the EU system and applies its own medicines, controlled-drug, tax, and customs rules.

Check the destination country’s medicines agency and customs authority before ordering. Do not use an approval, registration, or personal allowance from one European country as evidence for another. Our Europe VAT, duties and delivery guide explains tax concepts for skincare; it does not make a Japanese medicine lawful to import.

Six Japanese OTC examples and what to verify

The following products were active on YUBI100 when this article was prepared. They are examples of why the exact format and variant matter, not a statement that every destination permits them. Availability and packaging can change. Read the current product page, manufacturer label, and destination rule before ordering.

Loxonin EX Tape 21 sheets

The active Loxonin EX Tape 21 sheets page lists an external-use tape containing loxoprofen sodium. Daiichi Sankyo Healthcare’s official product page identifies the 21-sheet package and its Japanese Category 2 OTC status.

That Japanese status is not an international authorization. Confirm the ingredient and dosage form at the destination, especially where loxoprofen is not a familiar OTC ingredient. Do not confuse this retail EX Tape with a prescription product that happens to share the Loxonin brand.

External-use does not mean risk-free. Follow the package restrictions, do not use it as a substitute for medical evaluation, and consult a pharmacist or clinician if you have questions about other medicines, allergies, pregnancy, age restrictions, or ongoing symptoms.

Salonpas sheet variants

The active Salonpas page offers multiple sheet counts. Hisamitsu’s official Salonpas information identifies the standard Japanese product as a Category 3 external-use medicine and provides label directions and warnings.

Large counts deserve extra attention at customs. A high-count package is not automatically commercial, but several large packages can look less like a normal personal-use order. Select the actual variant you need and retain the store confirmation showing the sheet count.

Do not apply one Salonpas ingredient list to every patch, lotion, or related Hisamitsu product. The full product name and current package determine the formula.

Ohta Isan tablets, packets, and powder

The active Ohta Isan page combines several package choices: tablet counts, a packet option, and a 150g can. These are not necessarily one formula in different containers. Ohta Isan’s official site separates Ohta Isan A tablets from Ohta Isan powder packets S, and both are identified as Japanese Category 2 medicines.

Confirm the exact variant before checkout. At the border, “Ohta Isan” is not a sufficient ingredient description. Keep the box or can with the original Japanese ingredient panel and leaflet. If the destination requests an English ingredient explanation, use an official manufacturer document where available rather than an unofficial marketplace translation.

Cabejin Kowa α Plus 100 or 300 tablets

The active Cabejin Kowa α Plus page offers 100-tablet and 300-tablet variants. Kowa’s official product listing identifies Cabejin Kowa α Plus as a Japanese Category 2 stomach medicine and confirms these package sizes.

Choose a quantity that matches personal use and the destination rule. A 300-tablet bottle may still be a retail package, but its admissibility depends on dosage directions, shipment quantity, ingredients, and local law. Do not describe it as a food supplement merely to simplify customs; use the accurate medicine description.

Pabron Gold A tablets or powder packets

The active Pabron Gold A page lists a 210-tablet option and a 44-packet powder option. Taisho Pharmaceutical’s official catalogue separately confirms Pabron Gold A tablets and Pabron Gold A fine granules as Japanese Category 2 OTC cold medicines.

Combination cold medicines deserve an ingredient-by-ingredient check. A destination can restrict a decongestant, cough suppressant, sedating ingredient, or other component even when the whole product is OTC in Japan. Avoid combining it with other products containing overlapping ingredients unless a qualified professional confirms that the combination is appropriate.

This article does not reproduce a dosage schedule because age limits and directions differ by format and must be read from the exact current package.

Alinamin EX Plus 270 tablets

The active Alinamin EX Plus page lists 270 tablets. Alinamin Pharmaceutical’s official product information classifies Alinamin EX Plus within its vitamin and medicinal-product range and describes it as a Japanese OTC medicine, not simply an everyday food supplement.

That distinction is important at customs. A destination may regulate the product as a medicine based on its ingredients, dose, and claims even if a shopper informally calls it a vitamin. Declare it accurately and check the full formula. Do not assume that rules for ordinary nutritional supplements apply.

What you should not import through a casual OTC order

The following situations should stop the checkout until you have destination-specific confirmation:

• A product page or package identifies the item as prescription, medical-use, narcotic, psychotropic, or controlled.
• The ingredient list is missing, unreadable, or appears to belong to a different variant.
• The medicine is intended for resale, a clinic, a salon, or a group-buying business.
• You are ordering for an unrelated person where the destination allows only the traveller’s or patient’s own medication.
• The quantity exceeds the destination’s personal-use benchmark.
• The product needs refrigeration or controlled transport that the carrier does not provide.
• The seller or sender is asked to understate the value or call the medicine a gift, food, or cosmetic.
• The destination regulator has issued an import alert, prohibition, or safety warning for the product or ingredient.

When in doubt, pause the shipment before dispatch. Resolving a classification question is easier before the parcel enters customs control.

Documentation checklist

Keep documents consistent. The product name on the invoice, package, permit, and prescription should refer to the same item. A mismatch between a Japanese brand name and an English description can delay review.

Humidity & sweat resistance

Humidity matters mainly for storage and for external-use products; it does not change customs law. Keep tablets and powders in the original container, close caps securely, and follow the temperature and moisture instructions printed on the package. Do not move tablets into an unlabelled organizer before international travel if border identification may be required.

Sweat can affect how a patch adheres, but readers should follow the manufacturer’s preparation and application directions rather than improvising with tape, heat, or extra patches. External-use pain-relief products can have age, skin-condition, allergy, pregnancy, and interaction warnings. Stop use and seek professional advice if the label directs you to do so.

Never leave medicines in a hot vehicle, direct sun, or a humid bathroom unless the package explicitly allows those conditions. If a parcel arrives wet, damaged, unsealed, discoloured, or unusually warm, do not assume the medicine remains suitable. Contact the seller or manufacturer and obtain professional guidance.

Getting it outside Japan

Use this sequence before ordering Japanese OTC medicine internationally:

1. Open the exact product and variant page.
2. Record the complete name, format, count, and active ingredients from the current package or official manufacturer page.
3. Search the destination medicines regulator for the ingredient and product classification.
4. Check customs’ personal-use quantity and documentation rules.
5. Check whether advance permission is needed for controlled or psychotropic ingredients.
6. Confirm that the selected carrier accepts the dosage form.
7. Save the invoice, order confirmation, and official source pages.
8. Keep the medicine sealed in its original retail packaging until it clears the border.

Do not rely on the checkout accepting an address as a regulatory decision. Checkout verifies what the store and shipping service can process at that moment; customs and the destination medicines authority decide admissibility.

Shipping charges, taxes, and regulatory eligibility are separate. Paying tax does not legalize a prohibited medicine. Likewise, a low-value parcel can still be stopped for ingredient or permit reasons.

FAQ

If a medicine is OTC in Japan, can I import it for personal use?

Sometimes, but not automatically. The destination decides whether the exact product and ingredients are permitted. Personal-use quantity, original packaging, documentation, and carrier rules also matter.

Is six bottles a worldwide allowance?

No. The six-bottle benchmark discussed in this guide comes from Korean customs guidance. It is not a rule for the United States, Singapore, Malaysia, the Philippines, Europe, or any other destination.

Can I import a Japanese cold medicine into the United States?

Do not assume so. FDA states that a foreign medicine can be an unapproved drug in the United States even when sold legally abroad. Its personal-importation policy is discretionary and limited; it is not a general permission for online OTC orders.

Are patches easier to import than tablets?

Not necessarily. A patch is still a medicated product. The active ingredient, local classification, package quantity, and destination rules determine admissibility.

Can a seller remove the box to reduce shipping weight?

That is a poor choice for medicine imports. The original box and leaflet help identify the product, ingredients, warnings, manufacturer, and lot. Missing labels can create both customs and safety problems.

Can I order medicine for friends or customers?

Personal-use rules may restrict importing for another person, and resale requires a commercial route. Singapore, for example, limits when personal medication may be brought for someone else. Check the destination rule before ordering.

Is Alinamin EX Plus just a supplement?

The Japanese manufacturer presents Alinamin EX Plus as an OTC medicinal product. A destination may classify it based on its formula and claims. Declare the actual product rather than substituting a more convenient category.

What happens if customs refuses the parcel?

The authority or carrier may request documents, return the item, confiscate it, or take another action allowed by local law. Follow the official notice and do not send altered or false documents. Store and carrier refund policies are separate from the customs decision.

Final takeaway

The key rule is simple: Japanese OTC status ends at Japan’s border. The destination country evaluates the exact medicine again. Ordinary personal-use products may be possible when ingredients, quantity, packaging, documentation, and transport rules all align. Controlled substances, prescription items, unclear formulas, and resale quantities require a different level of review and often prior authorization.

Choose the exact variant, verify the manufacturer label, check the destination regulator, and keep the package intact. That process is slower than relying on a brand name, but it is the responsible way to buy Japanese OTC medicine from abroad.