Melatonin works great and I used to take it. But a captain brought up a good point that maybe you all can debunk for me. He basically said if we were to have an accident, there would be a deep dive into everything we did prior to the event, and perhaps even go through our suit case and see we have melatonin. This creating a situation of perhaps having taken something we shouldn’t have, or at least within a time frame we shouldn’t have. Seems the FAA says to wait 24 hours between taking it, and flying, which pretty much negates the use of it unless maybe your doing international flying