Xamoterol: Difference between revisions

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'''Xamoterol''' is a [[cardiac stimulant]] that acts on [[beta-1 adrenergic receptors]]. It was developed by [[Allen & Hanburys]] and first marketed in 1988. Xamoterol has a unique mechanism of action, known as partial agonism. This means it can both stimulate and block beta-1 adrenergic receptors, depending on the circumstances.
{{Short description|A beta-1 adrenergic receptor partial agonist used in heart failure treatment}}


==Pharmacology==
== Xamoterol ==
Xamoterol, chemically known as 5-[2-hydroxy-3-[(1-methylethyl)amino]propoxy]-3,4-dihydro-2(1H)-quinolinone, is a [[beta-1 adrenergic receptor]] partial agonist. This means it can both stimulate and block these receptors, depending on the circumstances. This unique mechanism of action allows it to increase cardiac output without significantly increasing heart rate or blood pressure.
[[File:Xamoterol.svg|thumb|right|Chemical structure of Xamoterol]]
'''Xamoterol''' is a [[beta-1 adrenergic receptor]] partial agonist that has been used in the treatment of [[heart failure]]. It is known for its unique mechanism of action, which allows it to provide positive inotropic effects without significantly increasing heart rate.


==Clinical Use==
== Mechanism of Action ==
Xamoterol was developed for the treatment of [[heart failure]]. It was first marketed in 1988 by [[Allen & Hanburys]], a British pharmaceutical company. However, it was withdrawn from the market in 1990 due to concerns about its safety and efficacy.
Xamoterol acts as a partial agonist at the [[beta-1 adrenergic receptor]], which is primarily located in the heart. By partially stimulating these receptors, xamoterol increases the force of contraction of the heart muscle (positive inotropic effect) while having a minimal effect on heart rate. This makes it distinct from full agonists like [[isoproterenol]], which can cause significant increases in heart rate.


==Side Effects==
== Clinical Use ==
Like other cardiac stimulants, xamoterol can cause a range of side effects. These may include [[palpitations]], [[tachycardia]], [[angina pectoris]], and [[arrhythmia]]. In some cases, these side effects can be severe and may require medical attention.
Xamoterol has been used in the management of [[chronic heart failure]]. Its ability to enhance cardiac output without causing excessive tachycardia makes it a valuable option in certain patient populations. However, its use is limited compared to other heart failure medications such as [[ACE inhibitors]] and [[beta blockers]].


==See Also==
== Pharmacokinetics ==
* [[Beta-1 adrenergic receptor]]
Xamoterol is administered orally and is absorbed through the gastrointestinal tract. It undergoes hepatic metabolism and is excreted primarily in the urine. The pharmacokinetic profile of xamoterol allows for convenient dosing schedules in the management of heart failure.
* [[Cardiac stimulant]]
* [[Heart failure]]


==References==
== Side Effects ==
<references />
Common side effects of xamoterol include dizziness, headache, and fatigue. As with other medications affecting the cardiovascular system, there is a risk of arrhythmias, although this is less pronounced with xamoterol due to its partial agonist activity.


[[Category:Cardiac stimulants]]
== Related Pages ==
[[Category:Beta-1 adrenergic receptor agonists]]
* [[Beta-adrenergic receptor]]
[[Category:Drugs withdrawn from the market]]
* [[Heart failure]]
* [[Inotropic agents]]
* [[Adrenergic agonist]]


{{stub}}
[[Category:Beta-adrenergic agonists]]
[[Category:Cardiovascular drugs]]

Latest revision as of 04:00, 13 February 2025

A beta-1 adrenergic receptor partial agonist used in heart failure treatment


Xamoterol[edit]

Chemical structure of Xamoterol

Xamoterol is a beta-1 adrenergic receptor partial agonist that has been used in the treatment of heart failure. It is known for its unique mechanism of action, which allows it to provide positive inotropic effects without significantly increasing heart rate.

Mechanism of Action[edit]

Xamoterol acts as a partial agonist at the beta-1 adrenergic receptor, which is primarily located in the heart. By partially stimulating these receptors, xamoterol increases the force of contraction of the heart muscle (positive inotropic effect) while having a minimal effect on heart rate. This makes it distinct from full agonists like isoproterenol, which can cause significant increases in heart rate.

Clinical Use[edit]

Xamoterol has been used in the management of chronic heart failure. Its ability to enhance cardiac output without causing excessive tachycardia makes it a valuable option in certain patient populations. However, its use is limited compared to other heart failure medications such as ACE inhibitors and beta blockers.

Pharmacokinetics[edit]

Xamoterol is administered orally and is absorbed through the gastrointestinal tract. It undergoes hepatic metabolism and is excreted primarily in the urine. The pharmacokinetic profile of xamoterol allows for convenient dosing schedules in the management of heart failure.

Side Effects[edit]

Common side effects of xamoterol include dizziness, headache, and fatigue. As with other medications affecting the cardiovascular system, there is a risk of arrhythmias, although this is less pronounced with xamoterol due to its partial agonist activity.

Related Pages[edit]