one's feet Dyskinesia abnormal, involuntary, repetitive, and pointless movements Vomiting Coma Cardiac arrest Uncommon Uncommon adverse effects of olanzapine, occurring from 0.1-1%, include: Leukopaenia a comparatively low white blood cell (the cells that defend the body from foreign invaders) count. Neutropaenia a reduced neutrophil (the white blood cells that kill bacteria) count. Bradycardia (low heart rate) QTc interval prolongation (an abnormality in the electrical cycle of the heart) Photosensitivity reaction Alopecia (hair loss) Urinary incontinence Urinary retention, the inability to urinate. Amenorrhea the cessation of menses (a woman's menstrual cycles). This is a complication of hyperprolactinaemia. Breast enlargement (in either sex). This is a complication of hyperprolactinaemia. Galactorrhoea (expulsion of milk from the breasts that's unrelated to pregnancy or lactation. Most likely the result of hyperprolactinaemia) High creatine phosphokinase (an abnormal laboratory finding) Increased total bilirubin (a by product of the breakdown of haem - a part of blood cells that is used to carry oxygen. In most people this is an indication of impaired liver function) Abdominal pain Rare Rare adverse effects of olanzapine, occurring from 0.01-0.1%, include: Hepatitis Rash Seizures Glaucoma Blindness Very rare (but not necessarily causally related) Very rare adverse effects of olanzapine, occurring less than 0.01%, include: Agranulocytosis, a potentially fatal drop in white blood cell count, basically an exaggerated form of leukopaenia. Thrombocytopaenia. A drop in blood platelet counts which are involved in blood clotting. Thromboembolism (blood clots; including pulmonary embolism and deep vein thrombosis) Rhabdomyolysis (breakdown of muscle tissue leading to the release of myoglobin into the bloodstream which in turn damages the kidneys) Alkaline phosphatase increased (an abnormal laboratory parameter) Priapism (a painful and enduring erection) Urinary hesitation Pancreatitis, swelling of the pancreas which supplies the body with insulin. Neuroleptic malignant syndrome a potentially fatal complication of antipsychotic drug treatment. Presents with hyperthermia, tremor, tachycardia (high heart rate), mental status change (e.g. confusion), etc. Jaundice, which is basically when the body's ability to clear a by product (called bilirubin) of the breakdown of an essential component of the blood called haem, is impaired leading to yellow discolouration of the skin, eyes and mucous membranes. Diabetic coma Diabetic ketoacidosis. Type II diabetes mellitus is basically where the body cannot effectively utilise sugars to produce energy due to the fact that its cells have become unresponsive to the hormone, insulin, which allows cells to utilise sugars for energy. This in turn forces the body