On January 15, 2024, an outside doctor told Kobayashi Pharmaceutical that people who had taken its supplements containing red yeast rice, beni kōji, were suspected of suffering health damage. The company began a voluntary recall about two months later and made the damage public on March 22.
The governing party Komeito called the two-month delay deeply regrettable. Clear deadlines for reporting such cases, set by severity, were then planned.