Erectile dysfunction is a common problem in males across the globe nowadays. This problem was once a "taboo" and never spoken of. It was especially a subject you never discussed with your physician. Not so any more!

When it comes to erectile dysfunction the most common first treatment prescribed are Viagra, Levitra or Cialis. The definition of erectile dysfunction is what occurs when a male is unable to obtain and uphold erection for sexual gratification of both themselves and their mate. These treatments, for the most part, do in fact work with most males without leaving any harsh side effects.

All of the aforementioned medications work basically the same way and obtain the same results. However, Viagra is the one medication in which the erection will last the longest. With this in mind and the possible side effects which may be caused by one or the other, Viagra would be the choice above the rest.

In order to obtain an erection, the medications produce a chemical which causes the blood vessels in the penis to relax and open freely. An increased level of nitric oxide is the major contributor to the achievement of an erection. However, with this in mind it is mandatory to understand that to achieve an erection sexual arousal is required. Taking these medications alone will not produce erection it has to be "helped along".

Once the penis is stimulated, you will achieve an erection.