Fildena 100, which contains Sildenafil Citrate, belongs to the Phosphodiesterase Type 5 inhibitors.This medication blocks the PDE5 enzyme. It improves the Cyclic Guanosine Monophosphate levels.
The cGMP level increases, which helps the penile muscles relax and the blood vessels expand.The blood vessels expand to allow blood to flow freely through the penis. This results in firm erection.To achieve a firm erection it is necessary to sexually arouse.
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