As a long haul pilot for years, there's a guarded secret among those of us that cross inumerable time zones at 500 MPH... even East Coast (I'm in the U.S.) to West Coast means arriving in San Diego with the sun still high in the sky but the body saying "bed time".
I'm usually loathe to give any advice when it concerns the health of the questioner... but I can't remember how long ago it was that I was introduced to Melatonin. I do remember it was a younger pilot that recommended it. I did an indepth study of it to assure myself there would be no side effects and that it would be effective.
Melatonin is a naturally occuring substance within everyone's chemical make-up. As one ages, the Melatonin production lessens. Research indicates it's produced by the pineal gland in the brain and is responsive to light and darkness... production naturally increases when night comes on thereby setting the circadian rythm "counter".
It's over the counter, can't be overdosed and is effective. No "druggy" left over when awakening. (There's some new research indicating the possibility of Melatonin having a positive affect on migraine headaches).
I take a 3mg tablet 30 minutes before bedtime. I prefer the sublingual tablet, but one can get the usual aspirin size as well.
You may find this article (among others) helpful:
http://www.vanderbilt...latonin.htm#Melatonin and Sleep
I do find that, at least for me, alcohol consumption should
not accompany taking Melatonin... but I don't drink much except an occasional glass of wine.
Best of luck!