Home / Valproic Acid / Japan
JP ATC N03AG01 · updated 2 Nov 2026
Valproic Acid shortage in Japan
Is there a Valproic Acid shortage in Japan?
Yes. As of 2 Nov 2026, 1 Valproic Acid product is reported short in Japan, the first since 13 Nov 2024. No return date has been given. Main reason: increased demand.
Also short in United States, Canada, France, Italy, Spain, Austria, Czechia, Sweden, New Zealand. All countries.
Affected products in Japan
| Country | Product | Company | Since | Expected back | Reason |
|---|---|---|---|---|---|
| JP | バルプロ酸Na徐放顆粒40%「フジナガ」 limited | 藤永製薬 | 13 Nov 2024 | not given | Increased demand |
Source
MHLW (Ministry of Health, Labour and Welfare), supply status of prescription medicines. Official list. Prescription products under limited shipment or supply suspension (delistings excluded); one row per product.