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How does Cialis work?
Posted in September 19th, 2008
Published in Description
Tags: Cyclic GMP, erection
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When a man is sexually stimulated, signals from the nervous system and the release of chemical messengers within the tissues of the penis allow him to have an erection. One of these chemical messengers, called cyclic GMP, causes the blood vessels in the penis to widen by relaxing smooth muscle tissue. This results in more […]