How Viagra works and its functions

Viagra brings erection via a complex chain of events that include the signals from the nervous system and release the chemical messengers within the tissues of the patient’s penis. One of the messengers is called the cyclic GMP. It causes the blood vessels in the penis to widen by relaxing the thin layer of a muscle found in the blood vessel wall. This brings more and more blood to the patient’s penis, which automatically brings the penis erect and rigid in nature.

 This cyclic GMP is normally broken by another chemical in the body called phosphodiesterase type 5. Viagra works by preventing the actions of type 5 thus holding the breakdown of the cyclic GMP. It shows the blood vessels are kept dilated for longer time, improving the blood flow to the penis and maintaining the erection of the penis.

 As it enhances the actions to the chemical messengers and responsible for the erection to the penis, it will only work once these chemical messengers are present. This shows that sexual stimulation is required for it to produce and maintain the erection. The most important thing is the dose should be taken one hour before the intercourse. Viagra should be taken on empty stomach then only it will work effectively.

 If not taken on empty stomach then it will take more time to work and will not be much effective. If Viagra is taken with the grapefruit, then it brings the increase in the blood level that has side effects. If the erection lasts for more than 4 hours it may work in the reverse direction and affect the erection tissue. Immediate consultation with the doctor is needed. It should not be taken more than once a day.

Viagra should be taken with more caution by the elderly people. Women, children and adolescents aged below 18 should not use Viagra at any cause.

Individuals having severe heart disorders should not take Viagra. People who had heart attack or stroke recently should not take Viagra. Viagra works for men and its having so many benefits but also brings side effects. However, it works effectively for the erectile dysfunction.

Viagra effectively works for the cancer patients too. Some cancer patients receive radiation therapy. According to a study to know the effect of the medications about seventy five percent of patients were treated successfully. More research is happening on the drugs to cure more diseases. Among the patients who were successfully treated with the drug, after initial trial more than 96 percent continued to use and found the medication more effective.

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