What Is Viagra And What Does It Do?

We bet that you have heard at one time or another people talking about the many wonders of a magic blue pill called Viagra. What is Viagra? A constant question that is in the mind of many men who are trying to find a solution to treat their erectile dysfunction problem. That's precisely what Viagra is for, to provide an alternative for a very common sexual malfunction. Find out Viagra's mechanism of action, composition and its effects in this and other articles.

Composition and Other Uses
What Is Viagra 's composition? Viagra's main component is Sildenafil Citrate, and it has been popularly marketed by pharmaceutical giant Pfizer since 1998. This medication has been the prime and most popular erectile dysfunction treatment, competing only with market rivals Tadalafil (active ingredient Cialis®) and Vardenafil (active ingredient Levitra). Sildenafil Citrate is also under study to be used in the treatment of other diseases such as pulmonary hypertension, altitude sickness, physical  enhancers, jet lag effects or simply for recreational purposes. As a matter of fact, this substance is already being marketed and available without prescription to the public to treat pulmonary hypertension since 2005 under the name Revatio.

How It Works
What is Viagra 's mechanism of action? Sildenafil Citrate's method of action is to release nitric oxide in the penis' corpus cavernosum. The nitric oxide will bind to the receptors of an enzyme called guanylate cyclase. This enzyme causes an increase in the levels of a cyclic nucleotide called cyclic guanosine monophosphate (cGMP), which leads to muscle relaxation of the internal arteries located in the penis that results in increase of blood inflow and erections. Viagra's component is excreted by the liver and kidneys, approximately over 95% by feces and a lower percentage by urine. The time that it takes to reach best results is around an hour from ingestion, and its effect can last up to four hours.

Side Effects
What Is Viagra 's Effect? Viagra's main effect is to cause and maintain an erection that is satisfactory enough to have sexual intercourse. However, the product does produce some minor Viagra side effects that most people experience after taking the drug. Clinical trials have reported that the most common side effects are headaches, facial flushing, indigestion, running nose and blurred vision. Some Viagra users suffered complete loss or a blue tint in their vision, but still those are rarely experienced. Other side effects less frequent include priapism (painful erections that last too long), abnormal low blood pressure, heart attacks, stroke, tachycardia, increased eye pressure, sudden hearing loss or photophobia (excessive sensitivity to light).

Generic Viagra and its brand name counterpart are definitely two of the most popular and best Viagra drugs at any online pharmacy in the world. Its proven record of safety, high quality and good results have made an impression on people trying to find a reliable solution to treat male impotence. Next time that you ask yourself what is Viagra, you will have a good idea of the convenience and effectiveness it can provide