The theme of our article is to acquaint you with the history of “Viagra” and to assist you buy viagra. There were 3 greatest findings in the world medicine: X-rays, penicillin and sildenafil. It was made under the term of “Viagra”. X-ray and penicillin researchers were given a Nobel Prize. This prestigious prize was given to chemists that founded sildenafil in fall of 1998. The history of “Viagra” has started in 1992 in Pfizer's Sandwich, where “Pfizer” corporation had its tests. A new medical matter sildenafil citrate was under the research of the “Pfizer” scientists those days. They were making drug from different heart diseases. The 1 purpose of the new substance anticipated to be in increment of the pressure in cordial muscle by the means of diminishing arterial blood pressure. But after several researches it was defined that sildenafil citrate doesn't have the anticipated result on the myocardium blood pressure the same as on the arterial pressure. But in the same time scientists observed that masculine patients who participated in the experiments didn't want to give the medicine back. The cause of the refusal was the similar among all the patients. All of them remarked the improvement of the erection grade. It was the consequence of sildenafil influence that wasn't useful for blood circulation in the heart but increased it in the male reproductive organs. Read the rest of this entry »

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