A 10 minute nap can have short-term effects on alertness while energy drinks can also provide a boost but may have negative consequences in the long run.
Melatonin levels in the blood may be orders of magnitude higher with a common melatonin dose of 2 milligrams, potentially affecting the body's glucose disposal system for those with a particular variant to the melatonin receptor. However, unlike other sleep aids, melatonin does not seem to lead to tolerance and withdrawal effects.
Certain supplements such as tryptophan and glycine have shown some effects on sleep in early research studies. However, serotonin is not a sleep hormone, contrary to popular belief.