of really quite stringent safeguards and new labeling so that it's much more clear to the prescribing physician that this is a powerful opiate drug with addiction potential, that it's only to be used for severe pain that requires round-the-clock opiate treatment when other treatments aren't adequate, that they need to be very sure that this is the right drug for their patient and reminds them of the addiction potential and the need to monitor their patient. >> the headline, dr. hamburg, a lot of people hear is that pain killer abuse is a big problem. you just alluded to this. 80%, roughly, of the world's pain medications are consumed in the united states. the concern that you hear is that could zohydro, making zohydro available, could it make the problem worse? what do you think? how do you answer that concern? >> well, i think we need to deal with the appropriate prescribing of opiates and we need to find