Quite the placebo: http://en.wikipedia.org/wiki/Aripiprazole
Suicidal feelings, thoughts and sudden mood changes
Akathisia, headache, unusual tiredness or weakness, nausea, vomiting, an uncomfortable feeling in the stomach, constipation, light-headedness, insomnia, sleepiness, shaking, and blurred vision.
Uncontrollable twitching or jerking movements, tremors, seizure, and weight gain. Some people may feel dizzy, especially when getting up from a lying or sitting position, or may experience a fast heart rate.
Neuroleptic malignant syndrome (Combination of fever, muscle stiffness, faster breathing, sweating, reduced consciousness, and sudden change in blood pressure and heart rate.)
Aripiprazole also causes sexual dysfunction.
Tardive dyskinesia (As with all antipsychotic medication, patients using aripiprazole may develop the permanent neurological disorder tardive dyskinesia.)
Stroke (While taking aripiprazole some elderly patients with dementia have suffered from stroke or 'mini' stroke.)
Other elderly patients may experience high blood sugar or the onset or worsening of diabetes.
Allergic reaction (such as swelling in the mouth or throat, itching, rash), increased production of saliva, speech disorder, nervousness, agitation, fainting, reports of abnormal liver test values, inflammation of the pancreas, muscle pain, weakness, stiffness, or cramps.