Der bør udvises forsigtighed når warfarin, acenocoumarol, tolbutamid, phenytoin eller andre aktive substanser, som vides at blive metaboliseret af CYP2C9 administreres i denne periode.
Caution is advised when warfarin, acenocoumarol, tolbutamide, phenytoin or other active substance that are known to be metabolised by CYP2C9 are administered during this time period.