It can be VERY DIFFICULT to source VetRX in Australia.
On my investigations, I found many who import this product can only get it in small batches at a time from the USA, so when they get it in it often sells out fast.
There are various places that do stock it. Mostly the more rural the fodder/farm store is the more likely they might have it, ironically. The city seems to be the worst place to look in South Australia.
Hills Farm Supplies at Mount Barker have had it in stock.
Michelle Worrell of Australian Rural & Veterinary Supplies on Facebook.
Many people email me to tell me she no longer stocks it, but she does get it back again throughout the year.
I frequently let you know via my Facebook page when it is listed.
Green Mums Perma-Poultry from QLD also are stockists.
They post Australia-wide.
If you know of any other sellers, please let me know.