Hey man, welcome too bluelight! Glad too have you on boared. Things have been a bit quiet lately. If you havnt already please read and make sure you familiorize yourself with all user guidelines as it will prevent any possible issues down the track.
Im more than happy too answer your question in a informative way that doesnt go against our harm reduction principles ( I dont need too know why, but im assume you ask for pain releif perposes as we wouldnt offer advice of how too best get fucked up from non prescription opioids)
Yes, in queensland and victoria definantly and i have lived in both states and as far as im aware its the same everywhere else here. Codeine is availible in over the counter meds. These range from 8mg up too the highest legally availible without a prescription, which is 15mg. Panadeine Extra is one example but there are others and a lot of phamacys will have there own brand line.
The best way to take them is how the pharmacist advises (which is usually on the box under directions)
I dont suggest doing so but will add the followimg for HR purposes as my gut feeling from the wording of your post was you may be planing too use it beyond the standed dose.
If so, ALWAYS do a Cold Water Extraction of the Codiene. Dont go eating 8 pills at once because the side effects of too much paracetimol and Ibuprofen ingestion can not be nice. Theres plenty if threads if you use the search engine on how to perform a C.W.E. Anymore questions feel free too ask. And welcome to Blue Light!
Andy