Hiya
If you are not using an agent and are particularly worried, I'd suggest getting in touch with one who specialises in medical issues such as Peter Bollard or Mark Webster - their details can be found here
www.themara.com.au
Here are some links regarding ADHD management in Oz
http://www.adders.org/ausmap.htm
http://www.abc.net.au/health/library/adhd_ff.htm
http://www.adhd.com.au/
http://www.aph.gov.au/library/pubs/C...01/01cib11.htm
All the best.
Karen x