I only ever got mild hayfever in the UK. Sneezes, itchy eyes that would last a week or two and then not bother me for another year.
Australia has decided it hates me, and has dispatched floral agents to disable me. They've replaced all the anti-histamine in the chemists with placebos, none of it makes any difference. I've tried Claratyne. No effect. I tried two tablets of Zyrtec yesterday, and all that did was make me dizzy. They don't sell Piriton here, so I'm going to google for the active ingredient and see if there's anything similar. It used to work in the UK, but who knows if it will be able to fight off this evil plague.
If that doesn't work I'm going to invest in some industrial decongestants and ride out the spring on a wave of snot.
UPDATE: The active ingredient in Piriton is chlorphenamine maleate. To the Pharmacy!