I really don't know... and I'm not sure how to find out.
The Ontario Neurotrauma Foundation website is strangely unnavigable and uninformative. Other than the PDF, I was unable to glean much of anything useful from it. That's why I posted the link to the concussion blog instead.
At least there is a document that one can give to PCPs that indicates we are not "making it all up." Certainly more clinical research is needed on some of the medications and supplements (and when is clinical research EVER adequately done on natural remedies

) but at least it is a start.
I would be interested to see some dialogue between you and BrokenBrilliant on the blog, too, Mark!