Beta-blockers work by lowering cardiac output.
When these receptors are activated, blood pressure and heart rate increase.
Beta-blockers reverse these effects; they lower blood pressure and heart rate.
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Atenolol and metoprolol primarily block beta receptors in the heart, so they are known as “cardioselective.
“At higher doses, though, they can also block beta receptors in the lungs.
This can cause chest pain to worsen and may even cause a heart attack.
Some of the differences in how these medicines work include:
These differences often dictate which medicine is prescribed.
However, regular metoprolol may need to be taken two to four times a day.
Side effects associated with atenolol and metoprolol are similar.
Other medications that interact with this enzyme can alter the levels of metoprolol.
Some of them include:
Discuss your treatment options with a healthcare provider to make an informed decision.
If you have specific questions about your prescription, your pharmacist is an excellent resource to help.
Summary
Atenolol and metoprolol are beta-blockers that primarily act on beta receptors in the heart.
While they are indicated for many of the same conditions, they have several important distinctions.
Metoprolol crosses into the brain and can cause side effects like hallucinations and nightmares.
Enzymes in the liver break it down, so it also has more drug interactions than atenolol.
On the other hand, metoprolol is safer than atenolol during pregnancy and lactation.
And it is more effective for people who have had heart attacks.
Your healthcare provider will work with you to develop the safest and most effective treatment plan for you.
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