I really don't know, your gonna have to google that one, i suppose it would be easy enough to thaw out and mix a bunch of daphia or brine shrimp and the appropriate amount of medicine and then re-freeze it. As for dry food you probably would need some special kind of tools
Got a hot lead on some medicated fish foods. Don't really need but will probably try buying as they are fairly cheap and will see if they make it.
The website I was thinking of is below. I have had kanaplex shipped ok to Australia. Also furan-2 but doesn't seem on the website anymore.
http://www.fishpond.com.au/q/Seachem+Laboratories+ASM881+Kanaplex+5+Gram?rid=964274509