Patients with severe renal impairment and those undergoing dialysis may experience altered effects from Vilitra 40. The drug’s clearance can be reduced due to impaired kidney function, leading to higher drug levels in the body. This can increase the risk of side effects, such as headaches, dizziness, or hypotension (low blood pressure). Additionally, the effectiveness of Vilitra 40 might be compromised if drug levels fluctuate or are inadequately managed.