Laxative

下剤 (Gezai)

A medication used to relieve constipation by stimulating bowel movements or softening stool. Types available in Japan include bulk-forming agents (psyllium), stool softeners, osmotic laxatives (magnesium oxide, lactulose), and stimulant laxatives (senna, bisacodyl). Magnesium oxide is the most commonly prescribed laxative in Japan. Many mild formulations are available without a prescription at pharmacies.

Magnesium oxide (Magsent) is a first-line prescription laxative in Japan and is especially common in elderly care settings due to its safety profile.

In 9 languages

LanguageTerm
English Laxative
Japanese (日本語) 下剤
Chinese (中文) 泻药
Korean (한국어) 변비약
Portuguese Laxante
Spanish Laxante
Filipino Laksatibo
Thai ยาระบาย
Vietnamese Thuốc nhuận tràng
Romanization Gezai
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Last reviewed: September 2026