Earlier quoted context omitted.
I don't know if it still the case but advertising costs were previously considered r&d so grossly inflating those numbers.
Do you a source? As far as I know, R&D never included advertising.
- Paying doctors to prescribe the drug to patients for "research purposes."
- Paying doctors for their "valuable opinions" about the drug.
- Paying for advertising to recruit patients into clinical trials.
And so on.
I don't think there are any industry-wide statistics, so you'd have to look at the break down for each individual drug (where available). If you read pretty much any book on the pharma industry it will go into this, there are no shortage that you can find on Amazon.