There was a good 1 page article about Viagra in the latest issue of TIME. It says that they are starting a european study in women to see if it will have similar effects on them (supposedly it should). Most of the study will be with post-menopausal women. They say that if it is similarly effective, there is more women than men (with ED) that could be helped. All of the sales projections for viagra have only been considering American men, just think of the sales of Viagra if it gets international approval for both men and women. It's not impossible to think that this drug alone could make $10 billion a year sometime in the next 10 years.