I'm prescribed 300mg 3 times a day. The neurologist explained that it would help with my headaches at the original concussion site and perhaps aid in my anxiety and OCD symptoms. I originally tried taking it at night but it disrupted my sleep. I know that is a paradoxical effect.

That is why I take it during the day as well as at night. My brain seems to be getting used to it and it no longer disrupts my sleep as far as I can tell. I'm hesitant to dose 900 mg all at once, since I am rather sensitive to medications at this point. I've noticed some adverse effects but overall it seems to be helping. Perhaps, pregabalin would be better suited for me, but my neurologist is not very flexible.