I took doctor prescribed MK for a few months. Three days into dosing I woke up feeling like I'd been hit by a truck and continued feeling that way upon waking for another few weeks until I got used to it. A cup of coffee would normally set me right, so I learned not to worry about it. Never had the ravenous appetite that some get from this. Doc took me off it and subbed GHRP-2 instead. Sleep did improve. Sides described by the poster who started this thread are not recognizable to me.