insomnia
"Took 100mg for the first time last night.  Don't think I rolled over all night - my hip is aching this morning, possibly because I slept in one position.  I slept through my alarm this morning.  Three cups of coffee later, I'm still groggy.  I'll try 50mg tonight and see if it works without the side effects.  I'd advise starting at a low dosage and working your way up."