Guaifenesin (Mucinex)
Guaifenesin
Mucinex-style guaifenesin tablets do not exist in Japan; the ingredient appears only inside combination cold remedies such as Pabron. For phlegm, Japanese pharmacists will instead offer ambroxol or carbocisteine products, which do the same job.
- Prescription status
- OTC only
- Over the counter
- Designated Class 2
- Bringing it into Japan
- ✓ 1 month Rx / 2 months OTC
- Names abroad
- Mucinex · Robitussin Chesty Cough
Over the counter
Only as a component of OTC cold and cough products; no standalone Mucinex-type tablet is sold in Japan.
- Look for this on the package
- グアイフェネシン
- Guaifenesin
- Common product names
- パブロンゴールドA新ブロン液エース
- Category printed on the package
- Designated Class 2
- Sold at any drugstore or pharmacy, and online. Ask staff if you are unsure; this category carries extra cautions.
Show this page to the pharmacist or staff. Prices and packaging vary by store, so look for the Japanese ingredient name.
Shows drugstores around your current location. We have no commercial relationship with any store. Open in Apple Maps
Prescription products in Japan
0 productsProducts on Japan's national drug price list. Prescription only: a clinic visit is needed, and pharmacies may substitute a generic with the same ingredient.
| Dosage forms |
|---|
Product names are shown in Japanese, exactly as printed on the package and the prescription. Show this page at the pharmacy.
All listed products (0) · Drug price list as of 2026-08-12
Bringing it into Japan
Up to a 1-month supply of prescription medicine, or 2 months of OTC medicine, without any paperwork. For more, apply for a Yakkan Shoumei (import confirmation) before travel.
Names abroad
| US | Mucinex, Robitussin Chest Congestion |
|---|---|
| UK | Robitussin Chesty Cough |
| Korea | 뮤시넥스 |
| China | 愈创甘油醚 |
| Taiwan | 愈創甘油醚 |
Sources
- Health Insurance Claims Review & Reimbursement Services — Drug master (NHI drug price list) shinryohoshu.mhlw.go.jp — 2026-08-12
- Ministry of Health, Labour and Welfare — Bringing medicines for personal use into Japan mhlw.go.jp
This page describes how a medicine is regulated and sold in Japan. It is not medical advice and does not cover dosing for your situation; follow your doctor's and pharmacist's instructions.