"-- initial ramp up weeks made me sleepy and very &quot;cloudy&quot;. good luck if you manage a team at work or have a detailed oriented job.
-- the &quot;best&quot; period lasted for a couple of months. sleeping was normal and i felt pretty &quot;clear-headed&quot;. however, it made my emotions &quot;neutral&quot; to almost everything. like a cardboard cut-out of the real me. no laughing at jokes. no &quot;natural&quot; sense of urgency when the situation called for one. 
-- then the side-effects really kicked in. i would get dizzy when standing up. then dizzy just sitting up in bed. i recall i read something about it can mess with your blood pressure. the &quot;gray cardboard cutout&quot; feeling got much stronger, plus i could not easily carry on a conversation during meetings."