You know the situation... You got something recommended by a good doctor in BKK. It works. Then you go home to Auistralia, Germany, or Transnetsria and it isn't sold there. Contact hospital and see if local friend can buy and ship?

Before getting into that (which may create some legal problems for you at the receiving end), are you sure there is no generic equivalent available in your country?

There are not many drugs used in Thailand that are not also available in the west. usually just a difference of brand name.