Purchase Cheap Viagra Online
Invention of sildenafil, issued under the patented name “Viagra” has become perhaps the greatest third “accidental” discovery in medicine - after the opening of X-rays and penicillin. These discoveries were awarded the Nobel Prize. The same high awards in autumn 1998 have been awarded and researchers, opened, among other things, the properties of the drug “Viagra”.
History of “Viagra” has started in 1992 in Britain, in the locality Pfizers Sandwich in the course of pharmacological research firm “Pfizer”. Researchers conducting clinical trials of new medicinal substances - sildenafil citrate, which was developed as a means to treat a number of cardiac ailments.
Scientists expected that citrate sildenafil will help to increase the flow of blood to heart muscle and reduce blood pressure. However, it was noted that the citrate sildenafil does not provide any material effect on blood circulation in the heart muscle (myocardium), or the blood pressure. In parallel, discovered that many male patients who participated in the study, refused to return the pills sildenafil, despite the end of testing. The reason for rejection of all these patients had one - they all noted the dramatic improvement in their quality of erection. Thus, despite the minimal impact of new drugs in circulation in the myocardium, sildenafil caused appreciable inflow of blood to male genitalia.
