Viagra Online Sale

Casual observation has played a crucial role in many of the greatest scientific discoveries. This is especially true of England. So, in 1928, Alexander Fleming accidentally discovered that some dirty mold (penicillin) killed almost all the bacteria that Dr. Fleming was grown in a Cup. And, of course, speaking of randomness in science, we cannot forget about Isaac Newton. He was lucky enough to sit under the tree when the apples fell, - so he came up with the idea that it is a good idea to study the laws of gravity.

Viagra, perhaps, will be the third of the great "accidental" discoveries made by the British. But unlike the discoveries of Newton viagra, in a sense, marks the victory over gravity: finally found the medicine, which raised helplessly hanging penises!

History of viagra began in 1992 in England, in the town of Pfizer Sandwich, in the course of scientific research on the instructions of pharmaceutical company Pfizer. The researchers conducted clinical tests received in the laboratory sildenafil citrate, studying the possibility of using it to treat angina - a disease which manifests itself in the form of attacks of acute pain in heart when coronary arteries that feed the heart muscle, are narrowed due to atherosclerosis and spazmiruyutsya. Scientists hoped that citrate sildenafil will increase the blood flow to the heart muscle. But the research results showed that sildenafil citrate does not appreciably affect the coronary circulation and does not facilitate strokes in the studied group of patients. In parallel, it was found that male patients who participated in the study, do not want to return the remaining tablets of sildenafil, despite the end of testing.

And here's why: despite the fact that the influence of the drug on the coronary circulation was minimal, sildenafil caused a palpable rush of blood to the male sexual organs! Truly it was the most pleasant of all the possible side effects that can cause the medicine!

Employees of the pharmaceutical company "Pfizer" with proper attention about this property is sildenafil and managed to recognize in it a powerful tool against erectile dysfunction. New drug viagra name invented long ago and have been waiting in the wings. In 1993 the workers of the company "Pfizer" started a long expensive clinical trials needed to definitively confirm is viagra really effective and safe treatment of erectile dysfunction.

Over the next four years, the company has conducted twenty-one clinical trial of a new drug in which the drug was tested in four and a half thousand men with erectile dysfunction. The total cost of research was estimated at 500 million dollars. USA. And in March 1998, the tests were successfully completed, was invented viagra, it was approved for sale in America and other countries enrolled in the pharmacy network - the first in the history of humanity oral medication for the treatment of sexual dysfunctions.

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