Viagra in more detail

During the initial testing phase, viagra went through some twenty different clinical trials involving more than 3,000 participants varying in age between 19 and 87 years. In all these trials, viagra proved effective and safe whether the cause of the dysfunction was physical or psychological. The end-point of the majority of tests was the ability to carry activity through to ejaculation. In all tests, viagra performed well in extending the length of time an erection could be maintained.

In the face of such evidence, all the world’s regulatory authorities have given viagra approval. In the following years, it has become one of the most used medications in the world. That it continues to maintain the largest market share is evidence that, despite the longer development time accorded to the two newer drugs, viagra remains the most popular of the three. One reason for this is that in the twenty clinical trials, the incidence of adverse side effects leading to discontinuation of treatment was almost the same for both viagra and the placebo. Put another way, the actual side effects experienced tend to be so mild and pass so quickly that most men hardly recognize them as side effects.