If you're struggling with sleep, you're not alone; and melatonin has likely come up as a potential solution. But if you're in Australia, you might be wondering: can you walk into a pharmacy and just buy it? Or do you need to speak to a doctor first? Here's what you need to know about melatonin prescriptions in Australia, how they compare to over-the-counter options, and when you might need a medical certificate due to sleep-related health issues.