The Science Of VIAGRA

On 09/Sep/2015 / In Articles

 
Doctor Reveals Exactly How The Little Blue Pill Helps Boost A Mans Performance In The Bedroom 
cGMP increases blood flow to the penis and causes an erection to occur
After sex, the PDE-5 enzyme breaks down cGMP so the erection subsides
Viagra works by inhibiting PDE-5 so cGMP is not broken down in the penis
As cGMP levels are high, it boosts blood flow to treat erectile dysfunction
 
It's the little blue pill that has revolutionised sex lives over the world. Viagra, known generically as sildenafil, helps boost blood flow to a man's penis so he can maintain an erection.
 
But the popular drug was invented accidentally, to treat angina, a heart condition that constricts the vessels that supply the organ with blood. Pfizer, the pharmaceutical company that creates the drug, were searching for something to relax these blood vessels, and in the process stumbled on a pill for erectile dysfunction. 
 
Until recently, only men who suffered impotence as a side-effect of illness or those seen by a specialist could be given the pills on the NHS. But since Viagra's patent ran out in 2013, its cost has plummeted by 93 per cent and cheaper, generic versions of the drug have become available.
 
Because of this, the NHS has allowed all men with serious impotence problems to be prescribed the pill, and prescriptions have soared, with more than 3,800 prescriptions being dished out every day last year. 
 
As the drug becomes increasingly common, Dr Tom Brett, a GP in London and medical director of Lloyd's Pharmacy's online doctor service, explains exactly how it works...
 

By MADLEN DAVIES FOR MAILONLINE

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