Fildena CT 100mg contains the active ingredient sildenafil citrate, which is a type of medication known as a phosphodiesterase type 5 (PDE5) inhibitor. It works by blocking the action of an enzyme called phosphodiesterase type 5. This enzyme is responsible for breaking down a chemical called cyclic guanosine monophosphate (cGMP) in the body.

During sexual arousal, the body releases nitric oxide, which leads to the production of cGMP. cGMP relaxes the smooth muscles of the arteries in the penis, allowing blood to flow into the erectile tissues, which results in an erection.

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