salmeterol

noun

sal·​met·​er·​ol sal-ˈmet-ə-ˌrȯl  -ˌrōl  -ˈmē-tə- 

: a bronchodilator administered by oral inhalation in the form of a salt C₂₅H₃₇NO₄·C₁₁H₈O₃ to treat bronchospasm associated especially with asthma and chronic obstructive pulmonary disease

Note: Salmeterol acts as an agonist, binding to beta-receptors that mediate the relaxation of bronchial muscles. When used in combination with fluticasone, it is marketed under the trademark Advair.