Antimalarial

Primaquine (malaria relapse prevention)

Primaquine phosphate

Primaquine (15 mg) is used to clear the liver stage of vivax malaria after treatment. Japan approved it in 2016 and only travel-medicine hospitals stock it; tafenoquine (Krintafel) is not approved. Travelers who fall ill after a trip should go to a hospital with an infectious disease department.

At a glance
Prescription status
Prescription only
Over the counter
Not sold OTC
Bringing it into Japan
✓ 1 month Rx / 2 months OTC
Names abroad
Primaquine

Over the counter

Prescription only; approved in Japan in 2016 and stocked by designated hospitals. Requires a G6PD test first.

Prescription products in Japan

1 products

Products 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 formsOral
Strengths (oral)15mg
Official price (per tablet or unit)¥2,242.8
Official NHI drug price. Patients with Japanese insurance pay 10–30%; visitors without it pay the full price plus consultation fees.

Product names are shown in Japanese, exactly as printed on the package and the prescription. Show this page at the pharmacy.

All listed products (1) · Drug price list as of 2026-08-12
プリマキン錠15mg「サノフィ」Oral · ¥2,242.8/tablet

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.

How to apply for a Yakkan Shoumei (article)

Getting it prescribed in Japan

Any clinic can prescribe it after a consultation. Bring the original packaging or a medication list. Use the hospital finder to find clinics with English-speaking staff or an international patient office.

Find a clinic by language

Names abroad

USPrimaquine
UKPrimaquine
Korea프리마퀸
China伯氨喹
Taiwan伯氨喹

Sources

  1. Health Insurance Claims Review & Reimbursement Services — Drug master (NHI drug price list) shinryohoshu.mhlw.go.jp — 2026-08-12
  2. 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.