Vardenafil is a medication used to treat erectile dysfunction. It works by increasing blood flow to the penis. A man with erectile dysfunction has difficulty getting or keeping an erection. Vardenafil is a prescription medication that can help these men by increasing blood flow to the penis. Vardenafil is taken as a pill, and it starts working within 30 minutes. It's important to know that this medication does not cure erectile dysfunction. Viagra (Vardenafil) is a medication used to treat erectile dysfunction (ED). Viagra is a phosphodiesterase inhibitor that works by increasing blood flow to the penis during sexual stimulation. Viagra can be taken on its own or with other medications to help you get and maintain an erection. Viagra is the trade name for a drug called Sildenafil. Viagra is the only oral medication for erectile dysfunction that is not a prostaglandin analog. Viagra is not a hormonal medication and does not affect natural hormone levels. Viagra is not an aphrodisiac and does not increase sexual desire. Viagra does not protect against sexually transmitted diseases (including HIV) and does not prevent pregnancy. Viagra (Vardenafil) is a medication used to treat erectile dysfunction (ED). Viagra is a phosphodiesterase inhibitor that works by increasing blood flow to the penis during sexual stimulation. Viagra can be taken on its own or with other medications to help you get and maintain an erection.