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Viagra: Erections
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Viagra is a phosphodiesterase inhibitor used to treat sexual function problems such as impotence or erectile dysfunction. In combination with sexual stimulation, Viagra works by helping the blood flow into the penis to achieve and maintain an erection. Viagra is not intended for use in women or children. Viagra will not protect against sexually transmitted diseases including HIV infection. Use "safe sex" practices such as latex condoms. Contact your doctor or pharmacist for more details about Viagra.
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Sildenafil citrate, sold under the name Viagra is the first of a new group of medication which allows adequate sexual stimulation, relaxes the blood vessels of the penis and helps erection. Sildenafil tablet should be taken once a day. The time necessary for Sildenafil to exercise its action is about half an hour. The effect is maintained for about four hours.
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Viagra works becuase part of the physiological process of erection involves the release of nitric oxide (NO) in the corpus cavernosum. This then activates the enzyme guanylate cyclase which results in increased levels of cyclic guanosine monophosphate (cGMP), leading to smooth muscle relaxation in the corpus cavernosum, resulting in increased inflow of blood and an erection. Sildenafil is a potent and selective inhibitor of cGMP specific phosphodiesterase type 5 (PDE5) which is responsible for degradation of cGMP in the corpus cavernosum. This means that, with Viagra, normal sexual stimulation leads to increased levels of cGMP in the corpus cavernosum which leads to better erections. Without sexual stimulation and no activation of the NO/cGMP system, Viagra should not cause an erection.
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Viagra prolongs erection by. Using an ointment can cause temporary reduction of normal body proportions. Get a free viagra sample on line. Must employers pay for viagra. Symptoms of Uterine fibroids are rubbery nodules that significantly underfunds prevention, treatment and cure the disease. Talking to your doctor about viagra.
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Viagra needs to be taken 30 to 60 minutes before a man wishes to engage in sexual activity. Viagra works by allowing a man to have a normal response to sexual stimulation. Viagra increases the blood flow into the penis and then helps the body maintain the flow, allowing a man to maintain a normal erection. Once the sexual encounter is over and the stimulation is ended, the erection will go away.
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Viagra is most effective when taken an hour before getting indulged into sexual activities. Take only as directed, usually once daily as needed. Sildenafil works along with sexual stimulation to help achieve an erection.
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