Filitra improves blood flow to the penis during sexual stimulation. It works by blocking the PDE5 enzyme, which normally breaks down cGMP. When this enzyme is inhibited, cGMP levels increase, causing relaxation of blood vessels in the penile tissue. This allows more blood to flow in, helping achieve and maintain an erection. It does not produce an erection without sexual arousal. Filitra should not be taken with nitrate medications (used for chest pain), as this combination can cause a dangerous drop in blood pressure.
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