Individuals WHO deliver already experienced NAION are at increasedrisk of NAION recurrence. Therefore, PDE5 inhibitors, including VIAGRA, shouldbe victimised with circumspection in these patients and only when the awaited benefitsoutweigh the risks. Conceive a starting loony toons of 25 mg in patients toughened with substantial CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, or saquinavir) or Erythrocin. Clinical
