I tried melatonin a couple of times and it didn't seem to help. Note also it's not available OTC here in Australia (except in the useless homeopathic form) you need a prescription, but you can bring it back from overseas if you like. Which is a little annoying. They're working on making CBD oil available (also not currently) OTC) but not melatonin unless I missed that.
Huh, I'm actually surprised it's not OTC in Australia. Any idea why it's not widely available?
I haven't tried CBD oil at all (save one time I accidentally got a canned coffee with cbd added to it). I have one friend who reports positive effects but doesn't use it consistently.