Melatonin (N-acetyl-5-methoxy-tryptamine) is a key metabolic hormone produced by most living creatures, that has been extensively researched for more than 30 years. The pineal gland, which governs sleep cycles, uses it to communicated with cells throughout the body.
I just googled it.
I take it on occaision. It works.
Melatonia/Seratonia oops. Well if I can't get to sleep tonight, that's why there is Ambien!!