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.

Viagra is the brand name for a medicine known as sildenafil which has been proven to be effective for the treatment of erectile dysfunction. The generic drug contains the same active ingredient as the branded drug, in this case sildenafil citrate, and is therapeutically equivalent to the branded medicine Viagra.

We know that in men, Viagra dilates blood vessels and increases the flow of blood to the penis. Women who take it might also have increased blood flow to the genitals. That may help increase sensitivity, arousal, and orgasmic function. Studies on its effectiveness in women have had mixed results.

Viagra helps to maintain the erection after ejaculation and reduces the refractory time before a second erection can be obtained. These medications may be combined with various creams aimed at reducing sensitivity.