I've been megadosing it the last few days 5000-8000mcg and I'm feeling extremely restless atm. I've woken up in the past around 4 ish but usually back in bed by 6. It's 11am now and the anxiety, restlessness and inability to sleep remains. I've been trying the Dr Pall protocol. These are the other supplements I have been taking Hydroxycobalamin 5000-8000mcg Vitamin E mixed tocopherols (300% RDA) MACA root 1g Selenium 100 mcg Grape seed extract Recent blood work showed high normal free T3. Could the selenium be sending me hyper?