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Salmeterol is a long-acting β2 adrenergic receptor agonist (LABA) used in the treatment and prevention of asthma symptoms and control of chronic obstructive pulmonary disease (COPD) symptoms. Symptoms of bronchospasm include shortness of breath, wheezing, coughing and chest tightness. It is also used to prevent breathing difficulties during exercise (exercise-induced bronchoconstriction).
Read the full article on WikipediaAsthma Clinical criteria: The condition must be stable for the prescriber to consider the listed maximum quantity of this medicine suitable for this patient, AND Patient must experience frequent episodes of the condition, AND Patient must be currently receiving treatment with oral corticosteroids; OR Patient must be currently receiving treatment with optimal doses of inhaled corticosteroids.
“Inhaled salmeterol belongs to a group of drugs called beta-2 agonists. These drugs stimulate beta-2 receptors present in the bronchial musculature. This causes them to relax and prevent the onset and worsening of symptoms of asthma. They act on the enzyme adenyl cyclase which increases the concentration of cAMP (Cyclic adenosine monophosphate). This cyclic AMP decreases the smooth muscle tone. This drug is 10,000-times more lipid soluble than the short acting beta-2 adrenoceptor agonist, albuterol. Unlike albuterol, salmeterol becomes dissolved in the lipid bilayer of the cell membrane, and its gradual dissociation from the cell membrane provides beta-2 adrenoceptors with a supply of agonist for an extended period of time.”
“5.5 hours”
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