HOW DOES IT WORK
Unlike previously approved treatments for impotence, Viagra does not directly cause penis erection, but affects the response to sexual stimulation. The drug acts by enhancing the smooth muscle relaxation using nitric oxide, a chemical that is normally released in response to sexual stimulation. This smooth muscle relaxation allows increased blood flow into certain areas of the penis leading to an erection.
Viagra was evaluated in numerous randomized, placebo controlled trials involving more than 3000 men with varying degrees of impotence associated with diabetes, spinal cord injury, history of prostate surgery, and no identifiable organic cause of impotence. Patients also had a wide range of other concomitant illnesses including hypertension and coronary artery disease.
The drug's effectiveness was assessed primarily using a sexual function questionnaire. Patients were asked to report at the beginning, and periodically throughout the studies, how often they were able to achieve an erection adequate for intercourse, and how often that erection was maintained after penetration. In addition, patients kept diaries of their sexual histories. In all trials, men on Viagra reported success more often than did men on placebo, and rates of success increased with dose. The findings were consistent in men representing a wide range of severity and etiology of their erectile dysfunction (impotence). Men with diabetes or radical prostate surgery had less improvement than did other groups.
Please understand that Viagra Professional is not a hormone or aphrodisiac - It's a medicine that treats a physical condition.

How much time does it take to work?

Take Viagra Professional about 15 minutes to 20 minutes before you plan to have sex. Viagra Professional can help you get an erection if you are sexually excited. After a man takes Viagra, he must be sexually stimulated for it to work. This can include kissing or touching. If you take Viagra Professional after a high-fat meal (such as fish & chips, cheeseburger or French fries), the medicine may take a little longer to start working.
Viagra Professional can help you get an erection when you are sexually excited. You will not get an erection just by taking the pill.
Viagra works by helping you get an erection in response to sexual stimulation. Once a man takes Viagra and has sex, his erection will go away after intercourse, just like it would normally. Viagra works in as quickly as 30 minutes and lasts for about 4 hours after that. Take your time and go at your own pace. In the rare event of an erection lasting more than 4 hours, see your doctor.
The Viagra Advantage

The bottom line is there are a lot of great reasons to choose Viagra (sildenafil citrate). That's why over 23 million men worldwide have turned to Viagra to treat ED. Learn why it might be right for you:


Better: For most men it may take 30 mins for VIAGRA to work.


Better: for men with ED

Medical Approvement

Dr. Sardar Ali Khan, MD, Professor of Urology Stony Brook School of Medicine:

I'm always happy to tell my patients that Viagra has been proven to have an excellent safety record and be highly effective. In fact, it has been tested in more than 130 completed and ongoing studies. These include over 13,000 men! And 23 million men have been prescribed Viagra. No other ED treatment can say that. Viagra is also the only oral medicine for ED and has been on the market for more than 5 years. Studies have shown that Viagra works for men of all ages and for men with ED that ranged from mild to severe.Viagra is well tolerated with a low incidence of side effects. And side effects do not increase or get worse over time. Viagra continues to work well after several years of use. It has not been shown to increase heart attacks or other health problems. When you choose Viagra you're choosing a product that has improved sex lives of about 16 million men with ED worldwide.And when you take Viagra, you can feel good knowing that it comes with the confidence and proven safety record of 5 years on the market.

Dr. John Mulhall, Director of Sexual Medicine Programs in the Department in Urology at NY Presbyterian Hospital:

For most men taking Viagra it starts working in 30 minutes. And Viagra`s effect lasts for 4 hours giving you a plenty of time to be spontaneous with your partner. When you take Viagra you can be confident it will work for you. In studies Viagra worked for 4 out of 5 men and it worked for most men regardless of how old they were or what caused ED. Viagra has also been shown to work well for men with ED and with a wide range of health problems - including high blood pressure, diabetes, and depression. It also treats ED for men who take medicines for high blood pressure and depression. Viagra has worked for about 16 million men with ED worldwide.
 
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