Doc,
Glaxo own the rights to non prescription Xenical Sales in the US. Not sure whether these figures are included in the $500m or not.
Their version is a diluted drug to try and curb the cost and the side effects.
Yahoo News:
By Susan Heavey
"Xenical is one of two main prescription obesity drugs on the U.S market. Its rival, Abbott Laboratories Inc's Meridia, suppresses appetite.
Some analysts have said side effects already keep prescription Xenical sales low, about $460 million worldwide in 2004.
But Ira Loss, a health care analyst for Washington Analysis Corp., said the U.S. market is ripe for an easy-to-buy, effective weight loss drug.
About 65 percent of Americans are overweight or obese, government data shows."