also known as epinephrine... it is a feel-good hormone that excites the sympathetic nervous system...
Just like dankendk said, it is also known as epinephrine and it does activate the sympathetic autonomic nervous system. It is secreted by the adrenal gland.
However, adrenaline doesn't really make you feel very good. Adrenaline is used by the body to induce the fight-or-flight response, raising your blood pressure, causing you to take bigger breaths, dilating your pupils, suppressing hunger, inducing sweating. Basically, think about the last time you were maybe jogging or scared. That was an adrenaline rush.
Adrenaline is a sympathomimetic drug.It is produced by the body endogenously too and it serves important functions in the autonomic nervous system.It prepares the body in emergency situations for the " fight or flight response".
As a drug it is used in cardiopulmonary resusitation for stimulating the heart and a vasopressor for maintaing the blood pressure.
It is also the drug of choice in very severe anaphylaxis.
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