In adults, the most common side effects when taking Abilify by mouth (seen in between 1 and 10 patients in 100) are restlessness, insomnia (difficulty sleeping), anxiety, extrapyramidal disorder (uncontrolled twitching or jerking), akathisia (a constant urge to move), tremor (shaking), dizziness, somnolence (sleepiness), sedation (drowsiness), headache, blurred vision, dyspepsia (heartburn), vomiting, nausea (feeling sick), constipation, salivary hypersecretion (increased production of saliva) and fatigue (tiredness). Akathisia is more common in patients with bipolar disorder than in those with schizophrenia. The side effects are similar in adolescents, but somnolence, sedation and extrapyramidal disorder are more common than in adults. The most common side effects with the injection (seen in between 1 and 10 patients in 100) are somnolence, dizziness, headache, akathisia, nausea and vomiting. For the full list of all side effects reported with Abilify, see the Package Leaflet. Abilify should not be used in people who may be hypersensitive (allergic) to aripiprazole or any of the other ingredients.