Fildena 25 mg is a medication primarily used to treat erectile dysfunction (ED) in men. It contains the active ingredient Sildenafil citrate, which belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. Sildenafil citrate works by inhibiting the enzyme phosphodiesterase type 5, which is responsible for the degradation of cyclic guanosine monophosphate (cGMP) in the smooth muscle cells of the penis.

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