Levitra was approved by FDA in the year 2003 after that this drug has created a good reputation in the erectile dysfunction market. This can also contributes to good advertisements rule handles by Bayer

In 2005, Bayer offered patient a refund if they are not satisfied with their drug levitra. By thing opportunity more and more people try to have Levitra drug and when taken most of people find it successful drug to treat erectile dysfunction.

In disparity, the sales ranking of Viagra fell precipitously from ninth place in 2005 to 19th during the previous year. It also noticeable the first time that Viagra has trailed behind Reductil in Taiwan's top-20 best-selling medications list.

Urologists credited uninspiring of Viagra to domestic financial slowdown .This may be due to its higher cost which discouraged less serious impotence patients from using the drug, and is not qualified for national health insurance coverage.

There can be another reason for fall in viagra sales and that is up coming of other erectile dysfunction drugs, such as Cialis and Levitra.