Vilitra 40 mg contains vardenafil, a PDE5 inhibitor used to treat erectile dysfunction (ED). While specific real-world studies on the Vilitra brand may be limited, research on vardenafil as an active ingredient provides information about its effectiveness and tolerability in everyday clinical use. Real-world studies involving thousands of men with ED have reported that vardenafil can improve erectile function, including erection firmness, ability to achieve penetration, and satisfaction with sexual performance.