But taking a look at the success ratio would further strengthen the belief on this medication which some has termed as Wonder Drug. Though in the later years of its use some side effects were reported; some of very serious nature but compared to the success ratio one can hardly hold back for giving it a try.

It was the first oral medication for erectile dysfunction and quite easier to acquire; its utility to be used 30-90 minuets before sexual intercourse was a very motivating factor for the user to convince for the use of this medication. As erectile dysfunction can be really embarrassing and lead to many serious repercussions. As compared to going underway expensive surgeries; using electronic gadgets and means for the treatment of erectile dysfunction in itself is a cause of mortification, rather it provide a mean for the occurrence of multiple complexes to undergo such a detailed process; taking a pill with a glass of water doesn’t seems to be much of task.

Though some of the counterfeit and clones badly tarnished the brand and its image but still It was not able to wean away much of its market share.

It is the inability to perform satisfactory sexual performance and what more alarming is that it accounts to be the major worldwide health care problem; Erectile Dysfunction, It is the inability to maintain an erection for sexual intercourse.

Sildenafil nitrate is a compound on which a group of pharmaceutical chemists working at Pfizer in a research facility in England back in 1994; studied it for use in hypertension and angina pectoris (reduced blood supply to heart muscle), later in the clinical trial it was observed that it had very little effect on angina but it could induce marked penile erections. Sensing an opportunity Pfizer therefore decided to market it as a remedy for erectile dysfunction and patented it in 1996. Later it was approved for use by United States food and Drug Administration in 1998 becoming the first oral treatment for erectile dysfunction and it soon became a huge success; where it sales between 1999-2001 exceeded $1 billion. Though in 2000 its global market share in prescribed erectile dysfunction pills was 92 percent but later with the emergence of other brands and some other factors it fell to 52 percent in 2007. The Pfizer’s patent on Sildenafil nitrate will expire in 2011-13.