オースギ抑肝散料エキスTG
Yokukansan (Kampo for irritability, dementia agitation)
Yokukansan (Kampo extract)
Yokukansan is used in Japan for irritability, restlessness and insomnia, and is notable internationally for its use in the behavioral symptoms of dementia, supported by Japanese clinical trials. It is a common alternative to antipsychotics in older patients; long-term use needs potassium monitoring because of licorice.
At a glance
- Prescription status
- Prescription and OTC
- Over the counter
- Class 2
- Bringing it into Japan
- ✓ 1 month Rx / 2 months OTC
- Names abroad
- 억간산 · 抑肝散
Over the counter
OTC Class 2; Alopanol is marketed for irritability and nervousness.
Finding it in a Japanese drugstore
- Look for this on the package
- 抑肝散（よくかんさん）
- Yokukansan (Kampo extract)
- Common product names
- ツムラ漢方抑肝散エキス顆粒アロパノール
- Category printed on the package
- Class 2
- Sold at any drugstore or pharmacy, and online.
Show this page to the pharmacist or staff. Prices and packaging vary by store, so look for the Japanese ingredient name.
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Prescription products in Japan
5 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 | Oral |
|---|---|
| Official price (per tablet or unit) | ¥9.3 – ¥16.7 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.
クラシエ抑肝散加陳皮半夏エキス細粒
コタロー抑肝散加陳皮半夏エキス細粒
ツムラ抑肝散エキス顆粒
医療用
ツムラ抑肝散加陳皮半夏エキス顆粒
医療用
All listed products (5) · Drug price list as of 2026-08-12
| オースギ抑肝散料エキスTG | Oral · ¥12/g |
|---|---|
| クラシエ抑肝散加陳皮半夏エキス細粒 | Oral · ¥16.7/g |
| コタロー抑肝散加陳皮半夏エキス細粒 | Oral · ¥9.3/g |
| ツムラ抑肝散エキス顆粒(医療用) | Oral · ¥16.1/g |
| ツムラ抑肝散加陳皮半夏エキス顆粒(医療用) | Oral · ¥14.4/g |
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.
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.
Names abroad
| Korea | 억간산 |
|---|---|
| China | 抑肝散 |
| Taiwan | 抑肝散 |
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.