I took some Alpha GPC today (2 - 300 mg capsules, one taken w breakfast and one taken w lunch) and this evening I had to lie down for a nap... I was so exhausted and had the worst brain fog when I woke up... no headache, thankfully. Has anyone else had this reaction to Alpha GPC? I'm inclined to believe that that's what caused my symptoms... I usually have bad brain fog, and it's one of my most stubborn symptoms, but this is way worse. thanks.