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You must have seen lots of ads on the internet about viagra such as cialis generic viagra, buy generic viagra, buy cheap viagra, discount viagra, levitra online, cheap generic viagra, cialis levitra sale viagra making you wonder what the hell is viagra and how it works. How does Viagra® do that? And why does Viagra® work only if the man is sexually stimulated?

So what is Viagra
Viagra is a drug used to treat male erectile dysfunction (impotence) and pulmonary arterial hypertension (PAH), developed by the pharmaceutical company Pfizer. Its primary competitors on the market are tadalafil (Cialis), and vardenafil (Levitra). Viagra works. That is, it works when certain criteria are met. All jokes and snide remarks aside, the drug was developed to help those in need

Well simply put, it a drug that was found by accident to be highly effective for erectile dysfunction (Viagra, aka sildenafil citrate, was originally to be a drug for treating angina and high blood presurre). Keep in mind that it does not initiate the sexual drive nor does it raise the libido, it merely helps sustain erection in males.

Erectile dysfunction can cause misery

Erectile dysfunction is the repeated inability to get or keep an erection firm enough for sexual intercourse.
Due to the sensitive nature of the condition, it is difficult to estimate how many men it affects.

When a man becomes sexually aroused impulses from the brain and local nerves cause muscles in the corpora cavernosa to relax, allowing blood to flow in and fill the spaces within the tissue.
This creates pressure in the corpora cavernosa, making the penis expand.
A membrane called the tunica albuginea helps trap the blood in the corpora cavernosa, thereby sustaining erection.
The erection is lost when the muscles contract to stop blood flowing into the penis, and open outflow channels.

What is Generic viagra - The generic version stands for drugs made by 3rd world countries drug companies which as similar in composition to original viagra and obviously at a fraction of original price

Does it cause multiple erections - Well think of a soft rubber tube which is limp when empty. Now think of it when its one end is restricted and other closed while it is filled with blood or water. Doesn't it become hard....that is what erections is. However the penis loses some of the erection as blood flow back...in case of viagra it does not flow back so it is easier to maintain erection. So don't forget that one still has to supply blood...meaning the sexual drive has to be initiated by the brain. It is not an automatic thing that you pop a pill and bingo!