I would definitely recommend the Humaworm; the following website may also be of benefit too, especially as the woman who created the website is based in Australia (the website was born out of the woman's experiences with parasite-related illness and she is now helping thousands of people to get their health problems sorted out).
I'm 31 and based in the UK: I've experienced rotten health for the last 18 years and have only just started treating it from an parasite point-of-view :) I'm currently taking the anti- parasite herbs from Humaworm. Well, yesterday and the day before I can honestly say I felt better than I've done in *years*. Definitely worth checking out.