Thank you for visiting "synapse".
The service will be unavailable due to system maintenance during the following period:
Date & Time: May 19, 2026 14:00 – 17:00 (JST)
We apologize for the inconvenience. For inquiries, please contact us using the inquiry form.
May 14, 2026
Kosei Pharmaceutical Co., Ltd.
"synapse" Customer Service Team