Both generic Sildenafil tablets and Viagra work exactly the same, are equally effective, and work for the same duration. The main difference between them is simply the price and branding; Viagra being more expensive.

Both Viagra and sildenafil (Revatio) contain the same active ingredient: sildenafil. However, Viagra is FDA-approved to treat erectile dysfunction, whereas sildenafil (Revatio) is FDA-approved to treat pulmonary arterial hypertension (PAH). The strengths and dosages used to treat each condition are different.

If you compare the active ingredients for generic Sildenafil vs Viagra, you’ll find that they are the same. If production standards are kept the same across the board then both tablets should produce the same results. This is also true of the listed efficacy levels, side effects, contraindications and interactions of either Sildenafil or Viagra.