Funny this thread popped up again, I'd just sworn off melatonin completely. I've been using it a bit to get over jet lag and then to adjust my sleep schedule to get more hours of daylight. Four out of five times I wake up suddenly about 3 hours later, feeling alert and refreshed, and can't get back to sleep even as the alertness wears off. Any idea why that keeps happening? Sans melatonin I never wake up on my own before I'd been asleep at least 7 hours.
Thankfully the temperature drop isn't an issue anymore - I'm on Armour and Isocort (adrenal extract) and I think I can say I'm thriving
For sleep, I'm finding that getting a good dose of sunlight soon after I wake up, exercising before breakfast (even a light workout/yoga), and dimming the lights a couple hours before bedtime works best for me... I also take 10,000 IU of Vitamin D in the morning and 400 mg magnesium at night which seems to help. No "sleep aid" per se made much of a difference.