Vardenafil is a phosphodiesterase type 5 (PDE5) inhibitor, similar to sildenafil and tadalafil. It works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. Vardenafil helps address the symptoms of erectile dysfunction by inhibiting the enzyme phosphodiesterase type 5, which leads to relaxation of smooth muscles and dilation of blood vessels in the penis.
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