The primary and most common component of the Fildena 100 is sildenafil citrate. By inhibiting the PDE5 enzyme, this drug relaxes blood vessels, allowing for smooth blood flow within the male genitals, particularly the penile region.
This particular enzyme reduces blood flow to the erectile area of the male genitals. Nitric oxide production increases after cGMP is activated. This triggers the inactivation of an enzyme, which improves blood flow to the male genitalia and hence the complete penile erection mechanism.