Wiki has a list of other names it may be sold under: https://en.wikipedia.org/wiki/Mucosolvan
Drugs.com has a list of the countries it’s available in, and under what names: https://www.drugs.com/international/ambroxol.html
Unfortunately, the US is not on that list. It might be possible to have it shipped here, but I don’t know enough about customs laws to be sure.
You beat me to it
Teach me to have a bunch of tabs open.
I’m off to see if this has any real basis in fact.