The topic of our composition is to acquaint you with the history of “Viagra” and to help you buy levitra. Sildenafil is considered to be the 1 of 3 great medicine findings of the twentieth century along with X-rays and penicillin. Nowadays it is named “Viagra”. X-ray and penicillin discoverers were awarded a Nobel Prize. This prestigious prize was adjudged to researchers that discovered “Viagra” in fall of 1998. The development of sildenafil has begun in 1992 in Pfizer's Sandwich, where “Pfizer” company had its researches. The scientists made clinical experiments of a new medicinal matter - sildenafil citrate. It supposed that a new medicine would be a cure of diverse cordial diseases. Firstly everybody thought to use it for increasing blood pressure in myocardium diminishing arterial blood pressure in the same moment. But it was noticed that sildenafil citrate doesn't have important impact neither on blood circulation in the cordial muscle nor arterial blood pressure. It was also mentioned that those masculine patients who were under the experiments didn't give the remedies back. All the patients had the similar motive for saving the medicine with them. Everyone was saying about the betterment of the erection quality. The reason was in the sildenafil effect. It wasn't really great in extending blood circulation within cordial muscle but it extended it in male reproductive organs. But the researchers didn't leave this trait of the remedy without appropriate attention and made some conclusions. It was quickly recognized as a medication for persons who have erectile malfunction. “Viagra” is the mixture of 2 words “Vigor” and “Niagara”. It should have meant the strength that the medication gives to a person. If you want to get viagra for women than you have to contact us. In 1993 prolonged medical researches that were necessary for corroboration of “Viagra” traits have begun. As a result these researches have conformed great efficacy of “Viagra” for impotence treatment and its high safety. On March 27 1998 FDA approved the usage of “Viagra”. 3000 people at the age of 19 to 87 were examined on the drug all over the world and presented great results. They have chosen people that had erectile malfunction for five years at average. Also they had various kinds of malfunction as organic, psychic and mixed. The results of these experiments show that “Viagra” is efficient for the renewal of erectile function. It raised the effectiveness of coitus in vast majority of cases, esp. with persons who are sick with diabetes. But we should say that there is no such a remedy in the world that may help everyone in all cases. Sildenafil is not a panacea. It assists to a vast majority of patients who perceived it but still there are some who couldn't do anything with their problem. So, if you have a necessity to buy cialis online contact our company.