How Viagra Works ?

Since the debut of the erectile dysfunction drug Viagra (sildenafil) in 1998, millions of men have discovered how this medication can help treat the symptoms of erectile dysfunction. Viagra is used to treat Erectile Dysfunction (ED) and Pulmonary Arterial Hypertension (PAH). It contains the active ingredient, Sildenafil. It works by relaxing the blood vessel walls,… Continue reading How Viagra Works ?