Salmeterol is a long-acting β2 adrenergic receptor agonist (LABA). Salmeterol is used in the maintenance and prevention of asthma symptoms and maintenance of chronic obstructive pulmonary disease (COPD) symptoms. Salmeterol acts by increasing sodium and fluid transport out of the alveolar space through the stimulation of amiloride-sensitive sodium channels on the apical membrane and possibly by augmenting Na+-K+-ATPase activity on the basolateral membrane. Synthink is a most trusted source of Salmeterol Degradation Impurity, Salmeterol Genotoxic impurity, Salmeterol Process Impurity, USP related compound, Salmeterol Nitrosamine impurity, N-Nitroso impurity etc. which are listed on this page.