For the most part, there are no differences between Viagra (sildenafil citrate) and sildenafil. The active ingredients are identical and the only differences are due to marketing.

Viagra and sildenafil are exactly the same medication. Taking either of the two will help with improving blood flow to the penis. They have the same active ingredient which is sildenafil citrate.

Sildenafil citrate (often shortened to “sildenafil”) is the main ingredient in Viagra. After parent company Pfizer’s patent expired, other manufacturers were allowed to manufacture generic Viagra under the name of its active ingredient, sildenafil. The terms are pretty much interchangeable, the way you might say “Kleenex®” to refer to a tissue.

Spoiler alert: There’s no real difference between Viagra and Teva sildenafil. Remember that the name of the drug sold as Viagra is sildenafil citrate. The difference in names is really just for marketing reasons. The main functional ingredient is the same.

Sildenafil and Viagra do the same job, they both contain the active ingredient sildenafil citrate. The difference is that Viagra is the well-known branded ED drug first launched by Pfizer.