Description

Viagra description and mechanism of action.

In fact, world famous Viagra is a byproduct of the development of the drug to increase blood flow to the heart muscle carried out in the framework of studies for the treatment of angina.

In the 90-ies researchers and pharmacists of the American company “Pfizer” carried out the study of the drug, which had to relieve chest pain in case of angina. The group of volunteers consisted mostly of very young people. Imagine their surprise when they felt twenty years younger!

The management of a pharmaceutical company immediately began production of a new drug, especially because tests had already been carried out.

Viagra does not affect libido, the drug acts only when a man feels sexual desire, causing a persistent erection, which can occur only in case of the sexual arousal for about four hours after taking the drug.

When sexual intercourse is finished, the penis naturally returns to its natural relaxed state. This means that Viagra helps men suffering from erectile dysfunction to perform sexual intercourse with natural sexual arousal.

According to the results of the recent studies, Viagra helps in cases where erectile dysfunction is a recurrent disease, with:

• diabetes and some other hormonal disorders;
• age and psychogenic erectile dysfunction;
• the spinal cord injuries and traumatic brain injuries;
• the simultaneous effect of several drugs, as well as receiving neuroleptics, antidepressants, tranquilizers.

Sildenafil citrate which is the active ingredient of Viagra, is a drug of the group inhibitors of phosphodiesterase of the fifth type (PDE5). The action of this group of drugs is based on the inhibition of the function of expanding blood vessels of the penis, therefore enhancing the erection for violation of this function.

According to the manufacturers of “Pfizer”, Viagra causes neither strengthening nor weakening of erection of healthy people. In general, the experts from Pfizer do not advise to experiment and to provoke fate.

In their opinion, if you took a pill of Viagra and felt some increased vivacity and readiness for sexual exploits, then you should consult a sexologist or an andrologist.

How does Viagra work?

The action of Viagra is manifested through half an hour after ingestion, the tablet (usually 50 mg) acts for about four hours. If you need to achieve a more rapid effect, you should take a pill before eating.

But the drug should be agreed with your doctor and they determine the needed dosage. There are many causes of erectile dysfunction; it is sometimes necessary to only treat the underlying disease, but sometimes you should also take Viagra.

This group of drugs is not addictive, does not interfere with ability to conceive, on the contrary, helps in getting pregnant.

The next thing that we should note is the opportunity to experience multiple orgasms in one use of the drug, as Viagra allows you to shorten the period of refractoriness.

Contraindications and side effects

Viagra pill is one of the best drugs for the treatment of impotence or erectile dysfunction, but it should be taken very carefully. In any case, older people who are experiencing the chest pain while walking or physical exertion, should be sure to consult a doctor before taking the drug.

And in any case, people should buy medicines only on prescription and at officially registered pharmacies that have a license to sell pharmaceuticals, and the availability of certificates of quality for all drugs.

The most common side effects after receiving “Viagra”:

• headache;
• sudden redness of the face and neck;
• the lack of smell and redness of the nasal cavity.

Men, who take nitrates to treat angina and other cardiovascular diseases (nitroglycerin, Cardicat, nitrosorbid, monosan, etc.) is absolutely contraindicated in the treatment of “Viagra”, as blood pressure can drop dramatically so that a person loses consciousness or may even die.

Patients with a predisposition to priapism should take the drug with extreme caution and only after consulting a doctor.

Viagra is contraindicated to women and children up to 16 years.