Much better CYP3A4 inhibitors such as ketoconazole or itraconazole could be expected to possess bigger results than found with saquinavir. A starting up dose of 25 mg of VIAGRA must be regarded as in patients getting erythromycin or potent CYP3A4 inhibitors (which include saquinavir, ketoconazole, itraconazole) [see DOSAGE AND ADMINISTRATION, CLINI