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Salmeterol is a long-acting beta2-adrenoceptor agonist (LABA), used in moderate to severe persistent asthma following previous treatment with a short-acting beta2-adrenoceptor agonist (SABA) such as salbutamol (albuterol).he primary noticeable difference of salmeterol from salbutamol, and other short-acting beta2-adrenoceptor agonists (SABAs), is its duration of action. Salmeterol lasts approximately 12 hours in comparison with the salbutamol, which last about 4â6 hours.
It works by relaxing muscles in the airways to improve breathing. Salmeterol inhalation is used to prevent asthma attacks or exercise-induced bronchospasm. Salmeterol inhalation is also used to treat chronic obstructive pulmonary disease (COPD) including emphysema and chronic bronchitis.Salmeterol inhalation may also be used for purposes not listed in this medication guide. Do not use salmeterol inhalation to treat an asthma attack that has already begun.ou should not use this medication if you are allergic to salmeterol or to milk proteins. To make sure salmeterol inhalation is safe for you, tell your doctor if you have: 1  a food or drug allergy; 2  heart disease or high blood pressure; 3  epilepsy or other seizure disorder;