Baseret på yderligere in vitro- resultater i humane levermikrosomer, hæmmer terapeutiske plasmakoncentrationer af montelukast ikke cytokrom P450 3A4, 2C9, 1A2, 2A6, 2C19 eller 2D6.
Based on further in vitro results in human liver microsomes, therapeutic plasma concentrations of montelukast do not inhibit cytochromes P450 3A4, 2C9, 1A2, 2A6, 2C19, or 2D6.