I'll just say two things. One, the only medication the FDA has approved for the treatment of PTSD is selective serotonin reuptake inhibitors. That's the only kind of drug that has been approved for the treatment of PTSD. Everything else is off-label. The only kind of drug that's been approved is an antidepressant.
I've just actually come from Gagetown. I spent two days there talking to their psychiatrists. There is a perception out there that benzodiazepines are abused, and there are too many people.... I looked at all the printouts from all of the psychiatrists, and there's just a very small number, like 1% to 2% who are on long-term benzodiazepines. The use of benzodiazepines—I know you didn't specifically ask that—is primarily for short-term intervention when there's an acute anxiety reaction or there's an acute bout of sleep deprivation. I can assure you that there are just a very small number that are on long-term benzodiazepines.
With respect to the antidepressants, the two modes of therapy that do have randomized control trials that support them are serotonin reuptake inhibitors and cognitive behavioural therapy.