ask your doctor if kickbacks are right for you

"...[P]harmaceutical companies spend almost twice as much on promotion as they do on R&D."

According to this new study, drug companies spend (per year):

$31.5 billion on research

$57.5 billion on marketing

(in addition to consumer ads, that's an average of $61,000 per physician on marketing).

If reading studies is not your thing, consumerist.com gives a good digest here.