Changes

Norepinephrine also acts as a [[neurotransmitter]] in the [[central nervous system]] and [[sympathetic nervous system]].  It influences alertness and arousal, and lower levels are associated with [[depression|depressed mood]].  Many [[antidepressant]] medications cause increased norepinephrine levels in the brain.  Drugs that increase norepinephrine are also used in the treatment of [[Attention Deficit Hyperactivity Disorder]] and [[hypotension]] (low blood pressure).

Norepinephrine also acts as a [[neurotransmitter]] in the [[central nervous system]] and [[sympathetic nervous system]].  It influences alertness and arousal, and lower levels are associated with [[depression|depressed mood]].  Many [[antidepressant]] medications cause increased norepinephrine levels in the brain.  Drugs that increase norepinephrine are also used in the treatment of [[Attention Deficit Hyperactivity Disorder]] and [[hypotension]] (low blood pressure).