Dette koncentrationsinterval dækker stigningen i sildenafils eksponering set i specielt designede lægemiddelinteraktionsstudier med CYP3A4- hæmmere (undtagen mere potente CYP3A4 - hæmmere som f. eks. ketoconazol, itraconazol, ritonavir).
This concentration range covers the increase in sildenafil exposure observed in specifically designed drug interaction studies with CYP3A4 inhibitors (except more potent CYP3A4 inhibitors e. g. ketoconazole, itraconazole, ritonavir).