BiBV if your drug has been out for awhile there should be a generic brand. If it's relatively new (I think it's under 20 years old) then patents apply and the developing company has the exclusive right to sell it. That of course doesn't mean that it can't be added to the PBS list. Just that the government will likely have to pay more for it. Not their favourite thing spending money (except on wage rises for themselves) but if there is enough benefit (like a drug that is way more effective than anything available currently) or enough of an outcry they will add it. Celebrex was one of those 'outcry' cases. The government paid a lot more for it than they do for most drugs because so many people wanted the 'miracle' cure for arthritis. Mental health being one of the most common illnesses in Australia you would think there would similarly be massive support for adding your medication to the PBS. Hopefully they are already considering it and after July it will be a whole lot cheaper.