Question: is sildenafil 20 mg the same as viagra?
Answer: Revatio is used to treat pulmonary arterial hypertension, while Viagra treats erectile dysfunction in men. How can you distinguish between the two? Revatio-equivalent sildenafil is only sold as a 20 mg tablet, while Viagra's generic sildenafil is sold in 25 mg, 50 mg, and 100 mg tablets.