Sildenafil Citrate 100mg ( https://www.esildenafil.com/treat-with-sildenafil/ ) is a product containing a PDE-5 inhibitor, sildenafil citrate which is a main-line of therapy and the most recommended drug by the doctors for the treatment of erectile dysfunction or male impotence. This medication was approved by the FDA in the year 1998 under the name of Viagra which became a blockbuster molecule all around the world. Here are the top questions about this molecule answered.