norepinephrine
/ˌnɔrɛpɪˈnɛfrɪn/
noun
- A hormone and neurotransmitter that helps the body respond to stress by increasing heart rate, blood pressure, and alertness.
- When you feel scared, your body releases norepinephrine to prepare for action.
- Exercise can increase levels of norepinephrine, which improves focus.
- Doctors sometimes use norepinephrine to treat dangerously low blood pressure.