Fildena 25 mg works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which normally breaks down a substance called cyclic GMP (cGMP). By preventing this breakdown, sildenafil helps increase the levels of cGMP, which leads to smooth muscle relaxation and blood vessel dilation, improving blood flow to the penis and resulting in an erection. Fildena can interact with certain medications, especially nitrates (used for chest pain) or other medications for erectile dysfunction, so it’s essential to inform your doctor of all medications you are taking.

https://www.genericday.com/fildena-25-mg.html