不知道其他國家。不過在美國，FDA 有指引，很多不用的藥可以放到廁所衝掉，，不一定要拿到專門的地方處理。

https://www.fda.gov/drugs/safe-disposal-medicines/disposal-unused-medicines-what-you-should-know

 

How to Safely Dispose of Unused or Expired Medicine

• The best way to dispose of most types* of old, unused, unwanted, or expired medicines (both prescription and over the counter) is to drop off the medicine at a drug take back site, location, or program immediately.

• If you cannot get to a drug take back location promptly, or there is none near you, and your medicine is
  • on the FDA flush list, your next best option is to immediately flush these potentially dangerous medicine down the toilet.
  • not on the flush list, you should follow these instructions to discard the medicine in your trash at home.