Revatio and Viagra contain the same active ingredient called sildenafil. However, Revatio is used for pulmonary arterial hypertension (PAH), whereas Viagra is used for erectile dysfunction (ED).

Viagra is a safe and effective treatment for ED. But as the saying goes, you can have too much of a good thing — and Viagra ...

In these cases, the tablets you have would actually be the generic form of Revatio, a medication that has the same active ...