Australia has had a range of drug-user based publications in the past, mainly generated out of the IV user organisations (like VIVAIDS Whack). I know I left some out, but maybe someone else can track them down.
NUAA have
Users News in NSW and
QuIVAA have
Dart and
Dart Stories for the Queenslanders.
I think
WASUA has one in WA, but I can't remember the name of it. The
Territory Users Forum has
TUM, the Territy Users Magazine, and
AIVL have
Junk Mail which is out every quarter IIRC, focused more on national issues.
There's also been a few zines (home-made on the photocopier) based on drugs. I suspect the internet has killed zines off totally, but you never know.
Not long ago I found an anarchist zine from 1992 which was devoted to drug use. It was published by a Melbourne collective and was like a manifesto about heroin and how it worked either for or against their cause.
There was also
Octarine put out in late 1996, aimed at psychedelic drug users and the doof scene around Nth NSW and SE QLD. I got handed a copy while I was leaving Beyond the Brain (@ the Epicentre) and read about chaos magic and psychedelics on the bus ride home. It was life-changing stuff!
I haven't heard of any recent drug-user based zines, but they might be out there. Check out your local groovy alternative bookstore to see if these types of zines still exist.