Navigating the regulations around purchasing medications while traveling in Japan can be a bit tricky, but it's important to understand the rules to ensure a smooth and legal experience.

 When it comes to antibiotics, the situation is a bit more complex in Japan compared to some other countries.

In general, antibiotics and other prescription drugs require a valid Japanese medical prescription to purchase legally.

This means that travelers cannot simply bring their own supply of antibiotics from home and expect to be able to refill or purchase them in Japan without proper documentation.

That said, there are some exceptions. - https://japanfocusguide.com/blog/can-i-buy-antibiotics-in-japan/?unique_id_z5orxhl4

"Navigating Japanese Medication Regulations: What Travelers Need to Know"