21 Undersøgelser hos voksne viste montelukasts evne til at supplere den kliniske effekt af inhalationskortikosteroider (% - ændring fra baseline for inhalationsbeclomethason plus montelukast versus beclomethason, henholdsvis for FEV1:
Studies in adults demonstrated the ability of montelukast to add to the clinical effect of inhaled corticosteroid (% change from baseline for inhaled beclomethasone plus montelukast vs beclomethasone, respectively for FEV1: