Every drug has a risk of long-term side-effects. Just so happens that Viagra's are only just becoming apparent.
about 900,000 patients had been prescribed Viagra in the UK
Many men suffer with impotence at some time in their lives - but the causes are purely psychological - give them a placebo tablets and tell them it's viagra............and there off again
!!
But I also know that some medication and medical conditions can cause impotence............realistically though, I'm sure that it does get prescribed when its not really needed.
The figure quoted above is also not a true reflection of how much viagra is being taken - as I said earlier many people are buying it from venues that sell sex, from the internet and the usual 'drug dealers'