Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor, similar to Sildenafil and Vardenafil, and it works by increasing blood flow to the penis, allowing men to achieve and maintain an erection during sexual stimulation. In the case of BPH, Tadalafil can help relax the smooth muscles in the prostate and bladder, leading to an improvement in urinary symptoms.
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