Skønt der ikke ses en øget incidens af bivirkninger hos disse patienter, når sildenafil gives sammen med CYP3A4- hæmmere, bør en startdosis på 25 mg overvejes.
Although no increased incidence of adverse events was observed in these patients, when sildenafil is administered concomitantly with CYP3A4 inhibitors, a starting dose of 25 mg should be considered.