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Doctor insights on: What Is The Difference Between Norepinephrine And Epinephrine

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What is the difference between norepinephrine and epinephrine?

What is the difference between norepinephrine and epinephrine?

Receptors: Epinephrine binds strongly to beta receptors which causes the heart rate to increase and heart to contract more forcefully. It also has Alpha receptor activity which causes blood vessels to contract which increases the blood pressure but norEpinephrine has a stronger effect on Alpha so it is used to increase blood pressure. Epinephrine would used in cases of heart failure to increase output. ...Read more

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Dr. Tonga Nfor
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Dr. James Krick
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Adrenaline (Definition)

Adrenalin(e) / Epinephrine is the hormone produced by the adrenal medulla that speeds and strengths the heart, dilates the airways, and shifts blood flow to the muscles. Often this is in response ...Read more


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What is the difference between epinephrine and norepinephrine?

Both: Are made in the adrenal glands of the body and are released in response to a need for increased energy. The fight or flight phenomenon. The biggest difference is that nor-epi causes more vasoconstriction of blood vessels where epi causes more increase in heart rate and cardiac output through contractility. ...Read more

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Dr. Tonga Nfor
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Is there a difference between epinephrine and norepinephrine?

Is there a difference between epinephrine and norepinephrine?

Synthesis & Locale: Norepinephrine (ne) and Epinephrine (e) are both sympathomimetic catecholamines that are synthesized in the adrenal medulla and terminals of sympathetic neurons. Along the metabolic pathway, ne is synthesized first -- and when an enzyme adds a methyl group, you have epinephrine. Ne is the main catecholamine in peripheral tissue and sympathetic neurons. E is mostly made in the adrenal medulla. ...Read more

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What happens if I had infinite energy. could it be a problem with norepinephrine and epinephrine?

What happens if I had infinite energy. could it be a problem with norepinephrine and epinephrine?

May be thyroid: If you are not takin stimulants like caffeine or energy drinks and have a yearly physical with normal blood work then be thankful. It could be hyper active thyroid but you would also have weight loss with anxiety and difficulty sleep along with other symptom. If not seeing a physician for more than a year it may be time ...Read more

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Dr. Tonga Nfor
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14/male results/ catecholamine norm? Norepinephrine, supine 136.0 pg/ml * epinephrine, <10 pg/ml *dopamine, <10 pg/ml norepinephrine, stand 457.0 pg/ml epinephrine, 14.0 pg/ml dopamine, 16.0 pg/m

14/male results/ catecholamine norm?
Norepinephrine, supine 136.0 pg/ml 
* epinephrine,  <10 pg/ml
 *dopamine, <10 pg/ml
norepinephrine, stand 457.0 pg/ml
epinephrine,  14.0 pg/ml
dopamine, 16.0 pg/m

Norepinephrine is: Elevated with normal Epinephrine and Dopamine could be from effects of high protein foods, medications or physical activity. Is your dr checking for pheochromocytoma or cause of depression? Give us some feedback! ...Read more

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I read that a certain amount of cortisol has to be in the adrenal cortex for norepinephrine to be converted to epinephrine. Can anything substitute?

I read that a certain amount of cortisol has to be in the adrenal cortex for norepinephrine to be converted to epinephrine. Can anything substitute?

Catecholamines: E and NE are made in the adrenal medulla. In Addison's, where there is no cortisol circulating, there is higher NE and lower E, presumably due to cortisol effects on the adrenal medulla production of catecholamines. If you have adrenal insufficiency and are taking your hydrocortisone, this should not be an issue. ...Read more

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Dr. Ravi Chand
725 doctors shared insights

Norepinephrine (Definition)

Norepinephrine is an inotrope which is a kind of heart ...Read more


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Levophed (Definition)

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