About Viagra

Viagra enables many men in the UK with erectile dysfunction to respond to sexual stimulation. When a man is sexually excited, Viagra helps the penis fill with enough blood to cause an erection.

Viagra was initially studied for use in hypertension (high blood pressure) and angina patients.  The drug was patented in 1996 and, approved for use in ED in 1998.

Since Viagra was introduced 120 million prescriptions for Viagra have been written in over 100 countries across the world. Nine Viagra pills are supplied every minute, worldwide and the overall success rate has been staggering.  Viagra is the most effective erection enhancement drug ever developed. Since its launch demand for Viagra has been increasing year by year as men who suffer with ED worlwide request their own supply. Viagra has become ever-more popular to those suffering impotence related problems.

Viagra will only last until sex is over and then your erection goes away although Viagra stays effective for up to 4 hours after taking it.
Sildenafil Citrate is the active component in Viagra and is usually absorbed into the bloodstream within 60 minutes of ingestion this then acts as an inhibitor to an enzyme called phosphodiesterase (PDE5), found primarily in the penis. Sildenafil citrate is the generic name for Viagra. The name represents the medications chemical name, whereas, the brand name Viagra is the name used for marketing purposes.
The effects of Viagra mean that by inhibiting PDE5 it keeps the smooth muscle in the penis relaxed for longer allowing more blood flow into the cavernous tissue, creating and maintaining an erection.

You will still require normal sexual stimulation for an erection to occur and so the drug is enhancing the natural process of sexual arousal. With Viagra, a touch or a glance from your partner can again lead to something more.