Why Viagra Tablets?

Sildenafil Citrate, also popularly known as Viagra or the blue pill is a drug that has been used very effectively to treat male erectile dysfunction. This wonder drug prepared by Pfizer was primarily developed to treat Pulmonary Arterial Hypertension but clinical trials showed that the drug caused profound penile erections among the subjects.

So what is erectile Dysfunction?

Erectile Dysfunction or male impotence is characterized by the inability to develop or maintain a penile erection. There can be various factors that can lead to an erectile dysfunction, of which few have been described below:

• Physiological: erection of the male penis is a hydraulic mechanism that involves the entry of blood into the penis and the retention of blood within the penis. For a couple to have a satisfying intercourse it is important to have a sustaining erection, erectile dysfunction is the inability to maintain a sustaining erection despite having the capability to ejaculate.
• Psychological: Psychological erectile dysfunction occurs when erection does not occur due to thoughts or feelings that prevent the person to have a normal erection. This condition can be cured and a couple of appointments with the psychiatrist can be helpful.

There are many ways by which erectile dysfunction can be analyzed:

Obtaining erections which are labile also called lazy erections, which are lost more rapidly than usual, can indicate that the mechanism of retaining blood in the penis is not functioning well. This condition signifies a clinical condition with a cardiovascular origin.

Another factor that leads to erectile dysfunction is Diabetes Mellitus or Hypogonadism (decreased testosterone levels) that causes men to have erections that do not last long enough for a proper sexual intercourse to take place.

Viagra is the preferred choice of men with erectile dysfunction to cure their problems. Viagra is a good vasodilator and helps the blood vessels of the penis to relax thereby it helps the blood to move into the penis and provides prolonged and sustained erection to the user. The process of penile erection requires the parasympathetic system to release Nitric Oxide in the Corpus Cavernosum of the Penis.

This NO undergoes a number of complex reactions which finally leads to vasodilatation of the blood vessels in the penis. The Sildenafil acts as a promoter of this reaction and helps the person to have a prolonged erection. Sildenafil can be metabolized by hepatic enzymes and can be excreted by the help of liver and kidney.

Apart from its use as a cure of erectile dysfunction, this wonder drug is a good cure to the Raynaud's phenomenon as well.  Viagra has been known to cure Raynaud's phenomenon attacks and has reduced their frequency by roughly one half; this is possible because of the fact that it can increase the amount of blood flowing through the capillaries nearly four times by vasodilatation.

But even if you take Viagra tablets you will still need some amount of physical stimulation to get an erection. As with all prescription drugs proper dosage is very important to give satisfactory results, usually the dosage of Sildenafil is about 25mg to 100 mg taken once per day 30 minutes to four hours before the sexual intercourse.