Viagra is a pill that contains Sildenafil citrate a chemical that helps to cure impotence. Sildenafil citrate is available with different brands ranging from Viagra and Revatio can also be found under its generic name. Commercially speaking Sildenafil citrate, the main competitor is tadalafil [Cialis] and vardenafil [Levitra]. Generic Viagra is produced using generic Sildenafil citrate, the same active ingredient which is also used for its branded products. Men's Health sexual What is Generic Viagra According to the definition in Wikipedia ®, Sildenafil citrate, sold under the name Viagra, Revatio and various other names, is a drug used to treat male erectile dysfunction (impotence). This is a website based on information that transports and links to other sites that offer generic equivalent of many popular brand drugs including Sildenafil citrate, Tadalafil and Finasteride to name a few. Generic Viagra is produced using Sildenafil citrate, the same active ingredient which is also used for its branded products. Sildenafil citrate dose is 50 mg and should be taken first half-an-hour or more love-making.