Der sås ingen signifikante interaktioner ved indgift af vardenafil (20 mg) sammen med warfarin (25 mg), som metaboliseres via CYP2C9, eller digoxin (0, 375 mg).
No significant interactions were shown when warfarin (25 mg), which is metabolised by CYP2C9, or digoxin (0.375 mg) was co-administered with vardenafil (20 mg).