Much better CYP3A4 inhibitors such as ketoconazole or itraconazole can be envisioned to have bigger consequences than seen with saquinavir. A starting dose of twenty five mg of VIAGRA need to be thought of in patients having erythromycin or solid CYP3A4 inhibitors (for instance saquinavir, ketoconazole, itraconazole) [see DOSAGE AND ADMINISTRATION,

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