I also take NO JET-LAG a homeopathic remedy when I fly to asia. It's a 13 hr flight. The plane arrives at 6am and taking it helps me to stay awake for the day. The internet address is www.nojetlag.com. It's made in New Zealand. Melatonin is not for everyone, my friend took a fraction of 1 dosage and she got very sick on the plane. I also read that women travellers who took sleeping pills had encountered unpleasant experience. Maybe it's wise to tell somebody to look out for you before you pass out.