If I may jump in re. sleep aids and Jet Lag :
When I bought some FlyerTalk merchandise, it included a packet of "No Jet-Lag" ('promotional product') , a homeopathic remedy.
http://www.nojetlag.com
"For relief of tiredness associated with air travel."
Chewable tablet containing:
Arnica Montana (Leopard's Bane), Bellis Perennis (Daisy), Chamomilla (Wild Chamomile), Ipecacuanha (Ipecac), Lycopodium (Clubmoss)
Don't know if it's a sleep aid. Maybe some of you will recognize the contents.