Stronger CYP3A4 inhibitors for example ketoconazole or itraconazole might be predicted to have increased consequences than observed with saquinavir. A setting up dose of 25 mg of VIAGRA needs to be viewed as in patients using erythromycin or sturdy CYP3A4 inhibitors (which include saquinavir, ketoconazole, itraconazole) [see DOSAGE AND ADMINISTRATI