I en 12- ugers, placebo- kontrolleret undersøgelse med pædiatriske patienter i alderen 2- 5 år, forbedrede montelukast 4 mg, en gang dagligt, parametrene for astmakontrol sammenlignet med placebo, også ved samtidig kontrolbehandling (inhalations - / autohalerkortikosteroider eller inhalations - / autohalercromoglycat).
In a 12-week, placebo-controlled study in paediatric patients 2 to 5 years of age, montelukast 4 mg once daily improved parameters of asthma control compared with placebo irrespective of concomitant controller therapy (inhaled/ nebulized corticosteroids or inhaled/ nebulized sodium cromoglycate).