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How will it work?

Viagra tablets contain the active ingredient sildenafil, which may be a medicine used in the treatment of erectile dysfunction (impotence). Sildenafil is also offered without a whole name, ie as the generic medicine.

Sildenafil is termed a phosphodiesterase sort five inhibitor, and works by preventing the action of a chemical in the body called phosphodiesterase sort five.

An erection is made via a complex chain of events, involving signals from the nervous system and the discharge of chemical messengers inside the tissues of the penis. One of these chemical messengers is termed cyclic GMP.

Cyclic GMP causes the blood vessels in the penis to widen by relaxing a skinny layer of muscle found within the blood vessel walls. This allows a lot of blood to enter the penis, which ultimately leads to the penis changing into rigid and erect.

Cyclic GMP is generally de-escalated by another chemical in the body referred to as phosphodiesterase type five. Sildenafil works by preventing the action of phosphodiesterase sort five, so stopping the breakdown of cyclic GMP. This means that that the blood vessels are kept dilated for extended, improving blood flow to the penis and maintaining an erection.

As sildenafil enhances the actions of the chemical messengers responsible for producing an erection, it will solely work once these messengers are present. This suggests that that sexual stimulation is required for it to produce and maintain an erection. The dose should be taken approximately one hour before you propose to have sex
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