>> Is that really why you think those warnings are there? No. Drug ads in the US have to include (and I'm no authority) information about possible side effects

>> Is that really why you think those warnings are there? No. Drug ads in the US have to include (and I'm no authority) information about possible side effects. Most drug ads will downplay that part and have someone read off the list quickly. The Viagra ads seems to have no shame about that particular possibility though. So my guess is it's required but they're also kind of happy to include it.