Here is a success history that I want to share - Even back in 1977, a pharmacologist from the University of Texas F. Murad worked on a stuff capable of both narrow and expand certain vessels of the brain, heart, lungs. In 1986, a similar development began Fershgott R. and L. Ignarro. In 1992, in England, when you create a therapy for the treatment of cardio - vascular diseases began testing a matter called sildenafil citrate. In addition to the main action, the drug in a specific way affect other vessels. During clinical trials, it has blocked certain enzymatic substances, which in turn dilates blood vessels of the pelvic organs. As a result of the improved blood flow there is an erection of the penis.
Therefore, further tests have gone a completely different directing. After their graduation, in 1998, the company "Pfizer" has released his famous "Viagra".
A three pharmacists in the same year won the Nobel Prize. Although scientists were awarded for the development of medicine to facilitate the state in pulmonary and cardiac diseases, widely recognized in the world it has received the drug on the basis of sildenafil citrate for the treatment of sexual dysfunction in men http://sildenafilcitratemed.com