In vitro studier med anvendelse af humane levermikrosomer viser ingen eller lille (< 25%) hæmning af cytochrom P450 isozymerne 1A2, 2A6, 2B6, 2C8, 2C9, 2C19, 2D6, 2E1 eller 3A4 ved koncentrationer af zonisamid, der er omkring to gange eller større end klinisk relevante ubundne
In vitro studies using human liver microsomes show no or little (< 25%) inhibition of cytochrome P450 isozymes 1A2, 2A6, 2B6, 2C8, 2C9, 2C19, 2D6, 2E1 or 3A4 at zonisamide levels approximately two- fold or greater than clinically relevant unbound serum concentrations.