When you're in a dark setting, your brain naturally produces the hormone melatonin. Your circadian rhythm and daily sleep are supported by this hormone
Certain drugs may interact with it.Before adding a new drug, be sure to go through your current regimen.
Melatonin is a hormone that helps the body prepare for sleep by lowering mood and energy levels, which may exacerbate or resemble depression in those who already have it
In general, "elderly persons may be more susceptible to melatonin and more prone to have adverse effects, most significantly tiredness and lethargy
Melatonin may actually keep you awake at night. A high dose of melatonin may cause a "increased alertness