Fenoterol: Difference between revisions

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{{Short description|A bronchodilator used in the treatment of asthma and other respiratory conditions}}
= Fenoterol =


'''Fenoterol''' is a [[bronchodilator]] medication primarily used in the management of [[asthma]] and other conditions associated with [[bronchospasm]]. It is a selective [[beta-2 adrenergic receptor]] agonist that works by relaxing the muscles in the airways and increasing airflow to the lungs.
[[File:(RR)-_and_(SS)-_fenoterol.svg|thumb|right|Chemical structure of (RR)- and (SS)-fenoterol]]


==Mechanism of Action==
'''Fenoterol''' is a [[bronchodilator]] used in the management of [[asthma]] and other conditions associated with [[bronchospasm]]. It is a [[beta-2 adrenergic receptor]] agonist that works by relaxing the muscles in the airways and increasing airflow to the lungs.
Fenoterol acts on the [[beta-2 adrenergic receptors]] located in the smooth muscle of the airways. By stimulating these receptors, fenoterol causes relaxation of the bronchial muscles, leading to dilation of the airways. This action helps to relieve symptoms of bronchospasm such as wheezing, coughing, and shortness of breath.


==Uses==
== Pharmacology ==
Fenoterol is indicated for the relief and prevention of bronchospasm in patients with reversible obstructive airway disease, including:


* [[Asthma]]
Fenoterol is a selective [[beta-2 adrenergic receptor]] agonist. It binds to these receptors in the [[bronchial smooth muscle]], leading to muscle relaxation and bronchodilation. This action helps to relieve symptoms of [[bronchospasm]] such as wheezing, coughing, and shortness of breath.
* [[Chronic obstructive pulmonary disease]] (COPD)
 
* Exercise-induced bronchospasm
== Stereochemistry ==


==Administration==
[[File:Fenoterol_stereoisomers.svg|thumb|left|Stereoisomers of fenoterol]]
Fenoterol is commonly administered via inhalation, which allows for direct delivery to the lungs and rapid onset of action. It is available in various forms, including metered-dose inhalers and nebulizer solutions.


==Side Effects==
Fenoterol has two chiral centers, resulting in four possible stereoisomers. The (R,R)- and (S,S)-enantiomers are the most relevant in terms of pharmacological activity. The (R,R)-enantiomer is primarily responsible for the bronchodilatory effects, while the (S,S)-enantiomer is less active.
Common side effects of fenoterol include:


* [[Tremor]]
== Clinical Use ==
* [[Tachycardia]]
* [[Palpitations]]
* [[Nervousness]]
* [[Headache]]


Less common but more serious side effects can include:
Fenoterol is commonly used in the treatment of [[asthma]] and [[chronic obstructive pulmonary disease]] (COPD). It is often administered via [[inhalation]] to provide rapid relief from acute bronchospasm. Fenoterol is available in various formulations, including metered-dose inhalers and nebulizer solutions.


* [[Hypokalemia]]
== Side Effects ==
* [[Hyperglycemia]]
* [[Paradoxical bronchospasm]]


==Precautions==
Common side effects of fenoterol include [[tremor]], [[tachycardia]], and [[nervousness]]. These effects are generally mild and transient. However, excessive use of fenoterol can lead to more serious cardiovascular effects, such as [[arrhythmias]] and [[hypertension]].
Patients with [[cardiovascular disease]], [[diabetes mellitus]], or [[hyperthyroidism]] should use fenoterol with caution. It is important to monitor for signs of excessive use, which can lead to decreased effectiveness and increased side effects.


==Interactions==
== History ==
Fenoterol may interact with other medications, including:


* [[Beta-blockers]], which can reduce the effectiveness of fenoterol
Fenoterol was developed in the 1960s and has been used clinically since the 1970s. It was marketed under various brand names, including Berotec.
* [[Diuretics]], which can increase the risk of hypokalemia
* [[Monoamine oxidase inhibitors]] (MAOIs) and [[tricyclic antidepressants]], which can enhance the cardiovascular effects of fenoterol


==Images==
[[File:Berotec.jpg|thumb|right|A Berotec inhaler containing fenoterol]]
[[File:Inhaler.jpg|thumb|right|A typical metered-dose inhaler used for administering fenoterol.]]


[[File:Bronchodilation.png|thumb|left|Diagram showing the mechanism of bronchodilation.]]
== Related Pages ==


==Related Pages==
* [[Asthma]]
* [[Asthma]]
* [[Chronic obstructive pulmonary disease]]
* [[Chronic obstructive pulmonary disease]]
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* [[Bronchodilator]]
* [[Bronchodilator]]


{{Bronchodilators}}
[[Category:Beta-2 adrenergic agonists]]
[[Category:Bronchodilators]]
[[Category:Bronchodilators]]
[[Category:Beta-2 adrenergic agonists]]
[[Category:Respiratory system drugs]]

Latest revision as of 14:18, 21 February 2025

Fenoterol[edit]

Chemical structure of (RR)- and (SS)-fenoterol

Fenoterol is a bronchodilator used in the management of asthma and other conditions associated with bronchospasm. It is a beta-2 adrenergic receptor agonist that works by relaxing the muscles in the airways and increasing airflow to the lungs.

Pharmacology[edit]

Fenoterol is a selective beta-2 adrenergic receptor agonist. It binds to these receptors in the bronchial smooth muscle, leading to muscle relaxation and bronchodilation. This action helps to relieve symptoms of bronchospasm such as wheezing, coughing, and shortness of breath.

Stereochemistry[edit]

Stereoisomers of fenoterol

Fenoterol has two chiral centers, resulting in four possible stereoisomers. The (R,R)- and (S,S)-enantiomers are the most relevant in terms of pharmacological activity. The (R,R)-enantiomer is primarily responsible for the bronchodilatory effects, while the (S,S)-enantiomer is less active.

Clinical Use[edit]

Fenoterol is commonly used in the treatment of asthma and chronic obstructive pulmonary disease (COPD). It is often administered via inhalation to provide rapid relief from acute bronchospasm. Fenoterol is available in various formulations, including metered-dose inhalers and nebulizer solutions.

Side Effects[edit]

Common side effects of fenoterol include tremor, tachycardia, and nervousness. These effects are generally mild and transient. However, excessive use of fenoterol can lead to more serious cardiovascular effects, such as arrhythmias and hypertension.

History[edit]

Fenoterol was developed in the 1960s and has been used clinically since the 1970s. It was marketed under various brand names, including Berotec.

A Berotec inhaler containing fenoterol

Related Pages[edit]

Template:Bronchodilators