Likewise but I've found small melatonin doses (plus reducing caffeine to once per day) to really help me conform to a 24 hour day. Worth trying if you haven't.
This happens if I take too much melatonin. The dosage in US-sold melatonin is unnecessarily high. Finnish tablets are typically 1.9mg, while US ones can have 10mg in just one.
Luckily some people warned about this a lot online (not to take too much, most pills are too much) and I was able to find 1mg tablets on Amazon when I wanted some.
I take melatonin (0.2mg via a spray). It is very effective. Nightmares are a recurring problem for me and other users I know, but can be solved with low doses and a lot of discipline.
There's this stuff at GNC called "Tri-Sleep". Imagine meletonin tablet effects x5. I don't get nightmares, but my dreams definitely get incredibly weird and more lucid. To be honest though, I definitely think I sleep deeper and longer when I take it amd feel more recovered. Again, anecedotal.
Anecdotally, me too. If not nightmares, very bizzare dreams that leave me feeling a bit weird for the day and I don't really feel nearly as rested as regular sleep, even if I sleep for longer.
Probably a contributing factor to difficulty in getting to sleep "at a good hour".
OTOH mild sleep deprivation has been shown to counter depression, so there's that.