Filitra 10 mg works by relaxing the blood vessels in the penis, which allows more blood to flow into the organ during sexual arousal. By inhibiting the enzyme phosphodiesterase type 5 (PDE5), which normally breaks down cyclic GMP (a substance that promotes blood flow), Vardenafil ensures that the blood vessels in the penis remain relaxed longer, making it easier to achieve an erection.

Key Mechanism of Action:

Increased Blood Flow: The main action of Filitra 10 mg is to enhance blood flow to the penis when sexually aroused, facilitating an erection.
Phosphodiesterase-5 Inhibition: By inhibiting the PDE5 enzyme, it prolongs the effects of nitric oxide, which is crucial for relaxing smooth muscle and increasing blood flow in the penis.