Where to Buy
Class 1 drugs (第1類医薬品) — including Bron liquid and Loxonin — require a pharmacist at the counter. They cannot be taken from the shelf. Show your phone with the Japanese name and ask *kore wa arimasu ka?* (これはありますか — "Do you have this?").
Class 2 drugs (第2類医薬品) — the majority of OTC cough medicines — can be purchased off the shelf at any pharmacy or drugstore without speaking to staff.
Convenience stores are useful for late-night emergencies but carry a limited range. The major chains (7-Eleven, FamilyMart, Lawson) typically stock 2–4 basic OTC products, usually generic versions of Pabron or similar. These will not include Class 1 suppressants.
Major drugstore chains are the recommended destination for all cough medicine needs. Matsumoto Kiyoshi, Sundrug, and Tsuruha Drug are the three largest and have stores near almost every tourist attraction and train station in Japan's major cities.
How to Ask at the Pharmacy
Avoid relying on a general translation app — pharmaceutical terminology is an area where machine translation performs poorly. Use these prepared phrases:
Show the pharmacist the Japanese text on your phone. Pointing to the relevant phrase is accepted and normal behavior at Japanese pharmacy counters.
For more guidance on Japan's pharmacy system, see the Japan Pharmacy Guide, which explains how OTC drug classifications work and what to expect at the counter.
When to See a Doctor
Most travel-related coughs resolve within 7–10 days with appropriate OTC treatment. However, some situations require professional assessment and potentially prescription medication.
See a doctor if you have any of the following:
- Cough lasting more than 3 weeks without a clear cause
- High fever (38.5°C / 101.3°F or above) accompanying the cough
- Coughing up blood or rust-colored mucus
- Chest pain or significant shortness of breath
- Wheezing (a high-pitched sound when breathing out)
- Feeling significantly worse after 7 days of OTC treatment
- You are immunocompromised, have asthma, COPD, or another chronic respiratory condition
- Cough primarily at night with no daytime symptoms (possible cough-variant asthma)
- Green or yellow phlegm persisting beyond a week (possible bacterial bronchitis or pneumonia)
In Japan, cough with significant breathing difficulty should be treated as urgent — go to an emergency clinic or hospital emergency department.
For non-emergency coughs that are not improving, an internal medicine (内科) clinic or respiratory medicine (呼吸器内科) clinic is the appropriate destination. Find an internal medicine clinic near you using our medical facility search. Many clinics in major tourist areas have English-speaking staff or multilingual support.
Cost and Duration Guide
Understanding what to spend and how long treatment should take helps set expectations before you visit the pharmacy.
General treatment timeline:
- A cough from a typical viral cold peaks at days 2–4 and usually resolves within 7–10 days of onset
- Post-viral cough (after the cold resolves) may last 2–8 weeks and is normal
- Cough that is worsening after day 5, or still present after 3 weeks, warrants a doctor visit
Clinic costs for context: An internal medicine visit in Japan typically costs ¥2,000–¥5,000 without insurance (less with travel insurance). If your cough requires prescription medicine (e.g., prescription-strength mucolytics or a course of antibiotics for bacterial bronchitis), the total including prescription typically runs ¥3,000–¥8,000. Most travel insurance policies reimburse Japanese clinic costs.
FAQ
Q: Why are some cough medicines kept behind the counter in Japan?
A: Cough medicines containing dihydrocodeine (a mild opioid) or other potentially habit-forming ingredients are classified as Category 1 drugs (第1類医薬品). By law, these must be dispensed by a licensed pharmacist. This is why Bron liquid, for example, is behind the counter rather than on the shelf. This does not mean the products are dangerous — just that the pharmacist needs to confirm they are appropriate for you.
Q: Can I take Japanese cough medicine with antihistamines I brought from home?
A: Combination cold medicines in Japan often already contain antihistamines (chlorpheniramine). Taking additional antihistamines would result in a double dose, increasing the risk of excessive sedation. Check the ingredients list of any product you buy and avoid doubling up on any drug class.
Q: Is there a cough medicine safe for pregnant women in Japan?
A: This is a question for a pharmacist or doctor. Dihydrocodeine, pseudoephedrine equivalents, and certain antihistamines should be avoided in pregnancy. Some carbocisteine products may be considered lower risk, but always consult a healthcare professional before taking any medication during pregnancy.
Q: My cough started after a cold but the cold is gone — is this normal?
A: Post-infectious cough (also called post-viral cough) is very common and can persist for 2–8 weeks after a cold resolves. The airways remain irritated and hypersensitive. This is often a dry cough and can respond to soothing lozenges, honey and lemon drinks, or low-dose cough suppressants. If it persists beyond 8 weeks, see a doctor.
Q: Will Japanese cough medicine interact with my blood pressure medication?
A: Some cough medicines contain methylephedrine or pseudoephedrine-equivalent compounds that can raise blood pressure. If you take antihypertensives, inform the pharmacist before purchasing. Dextromethorphan-only cough suppressants are generally safer in this regard.
Q: Can children use Japanese OTC cough medicine?
A: Most adult OTC cough medicines in Japan carry a minimum age of 15. Pediatric cough medicine formulations exist and are available at pharmacies. Show the pharmacist the child's age — they will guide you to the correct product. Do not give adult products to children without confirmed age-appropriateness.
Q: Is Bron liquid addictive?
A: Bron liquid contains low-dose dihydrocodeine, which is an opioid. At recommended doses for the indicated duration, dependence is unlikely. However, Bron has historically been misused for recreational purposes in Japan, which is why it now requires pharmacist dispensing. Do not exceed the stated dose or duration of use.