The beta-agonist group of bronchodilators, also called the beta-adrenergics, are short-acting medicines . They are used to treat and prevent bronchoconstriction, an abnormal contraction of bronchial wall muscles. They are usually administered by inhalation.
How do the beta-agonist bronchodilators work?
These bronchodilators relax bronchial muscles, promoting the passage of air into the lungs. They have a rapid onset of action and produce their effect in a few minutes. They are therefore indicated in acute attacks.
Do they have contraindications or precautions?
The beta-antagonist bronchodilators can cause heart palpitations, irritability, difficulty sleeping, muscle cramps and tremor. Usually the side effects diminish after using the medicine for a certain length of time.
Source: Merck Manual, 4th edition
The beta-agonist bronchodilators treat abnormal contraction of the bronchial wall muscles. © Phovoir
Beta-agonist bronchodilator - 1 Photo