Beta-adrenergic agonist

Beta-adrenergic agonists are a type of medication that are primarily used for the treatment of asthma and chronic obstructive pulmonary disease (COPD). They work by relaxing the muscles in the lungs, which allows the airways to open up and makes it easier to breathe.

Mechanism of Action

Beta-adrenergic agonists work by stimulating beta-2 adrenergic receptors in the lungs. This leads to a relaxation of the smooth muscle in the airways, which in turn leads to bronchodilation (widening of the airways). This helps to reduce symptoms such as wheezing, shortness of breath, and coughing.

Types of Beta-adrenergic Agonists

There are several different types of beta-adrenergic agonists, including:

• Short-acting beta agonists (SABAs), such as albuterol and levalbuterol
• Long-acting beta agonists (LABAs), such as salmeterol and formoterol
• Ultra-long-acting beta agonists (ULABAs), such as indacaterol and olodaterol

Side Effects

Like all medications, beta-adrenergic agonists can cause side effects. These may include:

• Rapid heartbeat
• Nervousness
• Headache
• Muscle tremors

Contraindications

Beta-adrenergic agonists should not be used by people with certain medical conditions, including:

• Certain heart conditions, such as tachycardia or arrhythmia
• Hyperthyroidism
• Diabetes

See Also

• Asthma
• Chronic obstructive pulmonary disease
• Beta-2 adrenergic receptor
• Albuterol
• Levalbuterol
• Salmeterol
• Formoterol
• Indacaterol
• Olodaterol

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