Generic Viagra is a Generic Medication used by men suffering from erectile dysfunction which is commonly known as male impotence. This drug is proven to be the best aid for men affected by sexual complications related to occasional or frequent erectile dysfunction. Generic Viagra is one of the most remarkable generic version of Viagra, which is a patented brand manufactured by Pfizer. Both the versions of this anti-impotence drug contains a very strong chemical component named Sildenafil Citrate and is manufactured using the same preparation method.