Increased tendency to fall asleep at night without causing central nervous system depression is a propey exhibited by:: (A) Pyridoxine, (B) Diphenhydramine, (C) Melatonin, (D) Ethanol
Answer is C. -Melatonin is an endogenous hormone secreted by pineal gland. -It regulates day night cycle. -It causes increased tendency to fall asleep at night without causing central nervous system depression