Samtidig administration af vardenafil og de potente CYP3A4- inhibitorer ketoconazol og itraconazol (oral formulering) er kontraindiceret hos mænd over 75 år.
Concomitant use of vardenafil with the potent CYP3A4 inhibitors ketoconazole and itraconazole (oral form) is contraindicated in men older than 75 years.