Sildenafil(Viagra), commonly known by the trade name Viagra is an oral medication used for the treatment of erectile dysfunction (ED). Pfizer commercially released Viagra in 1996 officially making it the first drug ever approved by the FDA for the treatment of ED. Since its inception many other bran..
Tadalafil(Cialis) is one of the more popular erectile dysfunction (ED) medications on the market and is most commonly associated with the brand name Cialis. Released by GlaxoSmithKline in 2003 and now owned by Eli Lilly, Cialis is very similar to the popular ED medication Viagra with the biggest dif..