Viagra: treatment of erectile dysfunction. Viagra treats Erectile Dysfunction: One of the most common chemical functions of Viagra is that it blocks a certain category of enzymes, which serves to make the erection turn flaccid. Belonging to the family of PDE5 inhibitors, Viagra is also commercial marketed under its generic name of Sildenafil. Such was the popularity of Viagra when it was first approved by FDA in 1998 that the team of scientists who discovered the contents and who were responsible for the making of the Viagra drug were duly awarded the Nobel Prize for medicine. Viagra Marketing: With respect to marketing and sale of Viagra drug across the nation, one may observe that this drug is equally famous on the numerous online pharmacies, where anyone with or without a prescription can place an order any time of the day or night. Viagra Online: Ordering Viagra through valid prescriptions however cost less, approximately 9 US Dollar per table of 500mg, which is also the starting dose, for a minimum order of 30 tablets. The per pill prices is however reduced if one wishes to place an order larger than 30 tablets. For those without a prescription, the same drug may cost up to 20 US Dollar per pill. There are some hazards also associated with buying drugs online, and with costly drugs such as Viagra. For example there have been instances where people have been ripped off, and instead of supplying the drug in its original form, people have received the same drug in half tablet forms as well as in the form of broken tablets and crumbs. In addition, the FDA states that there are certain countries where the same drug is said to be sold in its fake form, yet charging the same expensive prices. The countries, which have been found to be involved in such scrupulous practices, include Thailand, Mexico, as well as some of the Caribbean Islands. | 