"melatonin has kept all of my tardive syndrome symptoms at bay since the first time i took 3mg of melatonin for sleep interruptions. i was nicely surprised when i awoke that first morning: my involuntary movements of my jaw, the earaches inside and outside my ears, and the shakiness of my hands (which resulted in very scrawly handwriting)....all had disappeared! the odd time i feel my jaw move just a little and then i take 1/2 tablet of melatonin. it keeps that symtom and others at bay."