Beta2-Agonists

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Beta₂- Agonists

Examples

• salbutamol

• terbutaline

• salmeterol

  • longer acting

Uses

• Asthma
• Chronic Obstructive Airways Disease
• Inhibition of uncomplicated premature labour (24-33 weeks)

Route

• usually inhaled

Mechanism of Action

• relax bronchial smooth muscle

• reduce mediator release

• increase mucociliary clearance

Side effects

• tremor

• palpitations

• hypokalaemia

• arrythmias

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