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. 2022 Jul 1;15(7):817. doi: 10.3390/ph15070817

Table 8.

Classification of side effects according to their relationship to plasma clozapine or norclozapine levels, based on current evidence.

System Side Effect
Positive Correlation with Plasma Clozapine Levels No Significant Correlation with Plasma Clozapine Levels Controversial
Nervous system Εlectroencephalographic abnormalities, EEG slowing Seizures, sedation
Impaired cognitive performance (incl. memory problems and lack of concentration)
Extrapyramidal symptoms and tardive dyskinesia
Psychiatric Obsessive-compulsive symptoms
Depression/anxiety factor score (incl. difficulty in concentrating, tension, difficulty remembering things, depression, restlessness, difficulty getting to sleep)
Cardiovascular Heart rate variability QTc prolongation Myocarditis, pericarditis
Μyocardial function
Sudden death
Autonomic Dysregulation Body temperature dysregulation Hypertension Orthostatic hypotension
Τachycardia
Metabolic Hyperinsulinemia, C-peptide Weight gain
Hyperlipidemia Hyperglycemia
Endocrine Inverse correlation with fT3 Hyperprolactinemia
Gastrointestinal Paralytic ileus, constipation, colonic hypomotilityElevation of serum liver enzymes Sialorrhea, drooling
Geniturinary Enuresis Sexual disturbances
Other Elevation of IgM anticardiolipin antibodies