1. A hormone and neurotransmitter produced by the adrenal glands and nerve cells that increases heart rate and blood pressure and is involved in the body's stress response.
Usage: Also called noradrenaline; Medical/scientific term; Commonly used in medical and psychology contexts

Examples

• Norepinephrine is released during the fight-or-flight response to prepare the body for action.
• The doctor explained that norepinephrine levels affect mood and attention.
• During exercise, the body releases norepinephrine to increase heart rate and blood flow.
• Some antidepressants work by increasing norepinephrine levels in the brain.
• Norepinephrine is used in emergency medicine to raise blood pressure in critically ill patients.