Viagra - Active ingredient - Sildenafil, 100 mg. Effect of "Viagra" is based on significant increase of blood stream to penis. Begins to work in 30 minutes, the effect lasts for 4-5 hours. Most of men can take this generic viagra every day. Millions of men worldwide cannot be mistaken, choosing Viagra!

Brand Levitra – a drug from Bayer, with a basic chemical called Vardenafil, is an improved remedy for treating erectile difficulties. Operates approximately within 6-8 hours, so a man may be ready to perform sexually the whole night.

Viagra Super Active - an innovative formula of drug for treatment of erectile dysfunction. Drug is produced in gelatin capsules that allows to avoid emergence of heartburn or other unpleasant feelings in a stomach. Sildenafil Super Active also has a number of advantages. It is soaked quicker and works longer. The principle of action is identical with ordinary Sildenafil. Each capsule contains about 100 mg of active ingredient. That is quite enough for any man.