ZGEN – As mentioned in #msg-28085121, product volume ordered by hospital end users (as opposed to distributors) is available for most hospital drugs. It’s not available free and you won’t find it by Googling, but any sell-side analysts worth his salt ought to be able to get an accurate enough number for investment purposes.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”