Fildena 120 mg contains sildenafil citrate, a PDE5 inhibitor (phosphodiesterase type 5 inhibitor). In a healthy sexual response, the body produces cyclic GMP (guanosine monophosphate), which relaxes the smooth muscles of the penis and increases blood flow. PDE5 is an enzyme that breaks down cyclic GMP. By inhibiting PDE5, sildenafil helps to maintain higher levels of cyclic GMP, allowing the blood vessels in the penis to relax and dilate, which improves blood flow. This increased blood flow helps men with ED to achieve and sustain an erection during sexual activity.
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