Derfor bør forsigtighed udvises, grundet en mulig nedsat effekt, når deferasirox kombineres med stoffer, der metabolliseres af CYP3A4 (f. eks. ciclosporin, simvastatin, hormonelle antikoceptiva, bepridil og ergotamin).
Therefore, due to a possible decrease in efficacy, caution should be exercised when deferasirox is combined with substances metabolised through CYP3A4 (e. g. ciclosporin, simvastatin, hormonal contraceptive agents, bepridil, ergotamine).