Does doing 50 studies and only publishing the 3 that produce favorable results count as repetition? Because, BTW, that's exactly what Big Pharma does, and also intrinsically what the bias towards publishing only significant results does.
Pharma needs to send information about studies beforehand and regulators pay attention to this for new drugs which counters the effect your talking about. Further, they are happy to report inconclusive results the FDA mostly cares about harm to people not effectiveness.
Now, after drugs are on the market then there is another wave of less reputable research. But, the FDA has already approved the drug so they don't care as much.
