OTC - melatonin or benadryl. Some folks swear by a cocktail, that really isn't quality sleep for me.
Prescription - benzos such as zolpidem. A buddy swears by muscle relaxers like flexeril. They tend to leave me groggy.
Alternative - eat 50mg of an Indicia edible about an hour before bedtime.
Flexeril & Indica!
I better have DS hook me up on the edibles. Probably have to ingest while in the security line. DS had a vape pen loaded w/CBD. Good for anxiety & sleep. Tried it and it did put me to sleep. But Flight Attendants might slap you in zip ties if you were in the bathroom too long