More robust CYP3A4 inhibitors for example ketoconazole or itraconazole may be envisioned to own increased outcomes than witnessed with saquinavir. A starting up dose of 25 mg of VIAGRA needs to be deemed in individuals using erythromycin or robust CYP3A4 inhibitors (which include saquinavir, ketoconazole, itraconazole) [see DOSAGE AND ADMINISTRATIO