I don't know what is the dosage is of HCQ needed to reduce the symptoms of COVID. All I know is that when used in combination with zinc and 1 other drug (I can't remember its name) that 75 to 85% of patients have either been cured outright or have had their symptoms reduced and/or the duration of the illness shortened (and sometime dramatically shortened). It is not a cure because it doesn't work for everyone but it does work for most.
If I got COVID I would run to this solution before anything else. My sister has been taking for about 3 or 4 years now because she has rheumatoid arthritis, which is what the drug was created to help. It does help with her arthritis and it has absolutely no side effects on her. The drug has been around and approved by every government or medical association for over 70 years.
So even IF HCQ didn't help with COVID, there is absolutely no reason to limit or restrict its usage. There are several countries around the world where you can buy HCQ over the counter without a prescription.
When actual doctors who have prescribed HCQ to their COVID patients say it works then I believe them. When the government, even if it is someone with a medical background, says it doesn't work then I don't believe them. Governments, including Australia's government, are notorious liars. Governments want power and control. They do not follow any morals and they will do anything and everything to get that power and control. Historically speaking, governments have proven to be good at only 3 things, enslaving, stealing and killing. They are exceptional at those 3 things. Everything else they completely suck at, so much so that they make you wonder why we even keep them around.
I am not trying to disparage the Australian government but I have a friend who lives in Australia (in NSW) who tells me some of the things that your government is doing. There are a lot of things that both the US and the Australian governments are both supporting and they will both cause your country and my country to suffer and it all revolves around this push for Socialism that both governments are trying to force on the people.