D. Von Hayek, V. Hüttl, J. Reiss, HD. Schweiger and HS. Füessl (1999). [Hyperglycemia and ketoacidosis associated with olanzapine]. Der Nervenarzt, 70(9), 836-7. https://doi.org/10.1007/s001150050520

PubMed 10522253

[Abstract]
Two psychotic patients developed hyperglycaemia several weeks after starting olanzapine. In one case the elevated glucose concentrations returned to normal soon after withdrawal of olanzapine. In the second case severe ketoacidosis with lethal outcome occurred.