Mechanism of action
These drugs cause bronchodilation by direct stimulation of beta-2 adrenergic receptors present in bronchial smooth muscle. Salbutamol, Terbutaline and Salmetrol are relatively selective beta-2 receptor agonists.
Salbutamol is used to relieve symptoms of asthma and chronic obstructive pulmonary disease (COPD) such as coughing, wheezing and feeling breathless. It works by relaxing the muscles of the airways into the lungs, which makes it easier to breathe. Salbutamol comes in an inhaler (puffer)
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