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Filagra, which contains sildenafil citrate, primarily affects sexual arousal and response by enhancing the physiological process that leads to an erection. Here's how it works:

Increased Blood Flow: Filagra works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5). This inhibition leads to the relaxation of smooth muscles in the blood vessels of the penis, allowing increased blood flow into the corpora cavernosa, the sponge-like tissue that becomes engorged with blood during an erection.

Erection Support: By facilitating increased blood flow to the penis, Filagra helps to achieve and maintain an erection when a man is sexually aroused. It does not cause an erection on its own; sexual stimulation is still required.

No Direct Effect on Libido: Filagra does not directly increase sexual desire or libido. It only helps to improve the physical ability to have an erection in response to sexual arousal.

Enhanced Sexual Performance: By improving erectile function, Filagra can contribute to a more satisfying sexual experience, which may indirectly enhance sexual confidence and response.

Duration of Action: The effects of Filagra can last for several hours, typically up to 4-6 hours, allowing for greater spontaneity in sexual activity.

Filagra primarily supports the physical aspect of sexual arousal by improving blood flow to the penis, leading to a stronger and more sustained erection. However, it does not directly influence sexual desire or arousal; sexual stimulation is necessary for it to be effective.