Much better CYP3A4 inhibitors including ketoconazole or itraconazole may very well be predicted to possess larger outcomes than found with saquinavir. A setting up dose of 25 mg of VIAGRA need to be regarded as in clients having erythromycin or strong CYP3A4 inhibitors (such as saquinavir, ketoconazole, itraconazole) [see DOSAGE AND ADMINISTRATION,