Viagra, Cialis and Levitra
A Comparison between Viagra, Cialis and Levitra
Viagra is the business brand name for Sildenafil Citrate, which is used for treating erectile dysfunction in men. It was first created to treat angina, or heart disease, by the Pfizer pharmaceutical company. Nevertheless, after clinical studies, it was noticed that drug in fact boosted erections in men. The drug was given exclusive rights in 1996, and later approved by the FDA (Food and Drug Administration) on March 27th, 1998. This was really the first erectile dysfunction drug in pill form, to be approved by the FDA. [Read more →]
