The science of VIAGRA

158.00 $
Published date: 2025/10/23
  • Location: 93401, Perryville, Michigan, United States
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, 레비트라 비아그라 차이 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 레비트라 사용법 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 레비트라 사용법 those seen by a specialist could be given the pills on the NHS.

But since Viagra's patent ran out in 2013, 레비트라 구입 its cost has plummeted by 93 per cent and cheaper, generic versions of the drug have become available.

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