Erlotinib er en potent hæmmer af CYP1A1 og en moderat hæmmer af CYP3A4 og CYP2C8 samt en stærk hæmmer af glukoronidiseringen af UGT1A1 in vitro.
Erlotinib is a potent inhibitor of CYP1A1, and a moderate inhibitor of CYP3A4 and CYP2C8, as well as a strong inhibitor of glucuronidation by UGT1A1 in vitro.