Suicide
The risk of suicide attempts by patients with schizophrenia and bipolar disorder of the first type is due to the aforementioned diseases. In this regard, against the background of pharmacotherapy requires careful monitoring of those patients who have a risk of suicide is particularly high. When prescribing olanzapine, one should strive to minimize the number of tablets taken by the patient, so as to reduce the risk of overdose.
Hyperglycemia and diabetes mellitus
There is a higher prevalence of diabetes mellitus in patients with schizophrenia. As with some other antipsychotics, cases of hyperglycemia, decompensation of diabetes mellitus, in some cases accompanied by ketoacidosis and diabetic coma, including fatal cases, were rarely noted. A thorough clinical monitoring of patients with diabetes mellitus and patients with risk factors for the development of diabetes mellitus is recommended.
Change in lipid concentration
Changes in lipid concentrations in plasma with olanzapine should be monitored in patients with dyslipidemia and in patients with risk factors for lipid metabolism disorders.
M-holinoblocking activity
When conducting clinical trials, olanzapine therapy was rarely accompanied by undesirable reactions caused by blockade of M-cholinergic receptors. However, clinical experience with olanzapine in patients with concomitant diseases is limited, so caution should be exercised in prescribing olanzapine to patients with clinically significant prostatic hyperplasia, paralytic intestinal obstruction, occlusive glaucoma, and similar conditions.
The withdrawal syndrome
With a sharp discontinuation of olanzapine, very rarely (<0.01%) may develop the following symptoms: sweating, insomnia, tremor, anxiety, nausea, or vomiting.
Parkinson's disease
Olanzapine is not recommended for the therapy of psychoses induced by the intake of dopamine receptor agonists in Parkinson's disease. In clinical studies in patients with psychosis,induced drug intake (dopamine receptor agonist) in Parkinson's disease, increased symptoms of parkinsonism was noted very often (≥ 10%) and with a higher frequency than in the placebo group. Hallucinations were also noted very often (≥ 10%) and with a higher frequency than in the placebo group.
Experience in elderly patients with psychosis associated with dementia
The effectiveness of olanzapine in elderly patients with psychosis associated with dementia is not established. In this category of patients in placebo-controlled clinical trials, the incidence of lethal cases in the olanzapine group was higher than in the placebo group (3.5% vs. 1.5%, respectively). Risk factors that may predispose this group of patients to a higher mortality with olanzapine include age> 80 years, sedation, concomitant use with benzodiazepines, or the presence of lung pathology (eg, pneumonia with or without aspiration). There is insufficient evidence to establish differences in the incidence of cerebrovascular and / or mortality (compared with placebo) and in the risk factors for this group of patients when taking anelanzapine.
Impaired liver function
In some cases, taking olanzapine.As a rule, in the early stages of therapy, accompanied by a transient, asymptomatic increase in the activity of "liver" transaminases (ALT and ACT) in the serum. There were rare cases of hepatitis. In addition, there were individual reports of cholestatic and mixed liver damage. Particular caution is needed when the activity of ACT and / or ALT in the blood serum is increased in patients with insufficient liver function, with limited functional liver reserve, limited functional liver reserve, or in patients receiving potentially hepatotoxic drugs. In the case of increased activity of ACT and / or ALT during treatment with olanzapine, careful monitoring of the patient and, if necessary, a reduction in dose are required. In case of serious violations of liver function caused by taking olanzapine, its use should be discontinued.
Neutropenia
Caution should be applied olanzapine in patients with a low content of leukocytes and (or) neutrophils in the blood; receiving drugs that can cause neutropenia; with oppression of bone marrow function due to concomitant disease, radiation or chemotherapy; as well as in patients with eosinophilia and (or) myeloproliferative diseases.The development of neutropenia has been reported, mainly, when olanzapine is combined with valproate.
Malignant neuroleptic syndrome (CNS)
ZNS is a potentially life-threatening condition associated with antipsychotic medication (neuroleptics), including olanzapine. Clinical manifestations of CNS include a significant increase in body temperature, rigidity of the musculature, change in status and vegetative disorders (unstable pulse or blood pressure, tachycardia, increased sweating, cardiac arrhythmias). Additional symptoms of ZNS: increased activity of creatine phosphokinase (CK), myoglobinuria (against rhabdomyolysis) and acute renal failure. Clinical manifestations of CNS or a significant increase in body temperature for no apparent reason require the removal of all antipsychotics, including olanzapine.
Convulsive Syndrome
Olanzapine should be administered with caution to patients with a history of seizures or the presence of factors that reduce the threshold of convulsive readiness. In such patients, seizures were rare in the treatment with olanzapine.
Late dyskinesia
In comparative studies olanzapine treatment was significantly less often accompanied by the development of dyskinesias requiring medical correction than the use of typical and other atypical antipsychotics. However, the risk of tardive dyskinesia with prolonged therapy with neuroleptics should be considered. When developing signs of tardive dyskinesia, a dose adjustment of an antipsychotic is recommended. It should be borne in mind that when translated into olanzapine symptoms of tardive dyskinesia may develop due to the simultaneous withdrawal of previous therapy. Over time, the intensity of this symptomatology may increase, moreover, these symptoms may develop after discontinuation of therapy.
Total activity against the central nervous system
Care should be taken when using other means of central action and alcohol.
Development of risk of sudden death
Experience in the clinical use of any antipsychotic, including olanzapine, found a similar, dose-dependent, double increase in the risk of death due to acute heart failure, compared with deaths due to acute heart failure in patients who did not use antipsychotics.
Cerebrovascular adverse events, including stroke in elderly patients with dementia
Cerebrovascular adverse events (for example, stroke, transient ischemic attack), including death, were noted in studies of olanzapine in elderly patients with psychosis associated with dementia. In placebo-controlled studies, there was a higher incidence of cerebrovascular adverse events in patients in the olanzapine group than in the placebo group (1.3% vs. 0.4%, respectively). All patients with cerebrovascular disorders had preexisting risk factors for cerebrovascular adverse events (eg, mentioned earlier in case of cerebrovascular adverse event or a transient ischemic attack, hypertension, smoking), as well as comorbidities and (or) administration of drugs over time associated with cerebrovascular adverse phenomena. Olanzapine is not indicated for the treatment of patients with psychosis associated with dementia.
QT Interval
In clinical studies, infrequently observed clinically significant prolongation of the interval QT (QT interval corrected Fridericia [QTcF]> 500 ms in patients with baseline, QTcF <500 ms) in patients treated with olanzapine, in the absence of significant differences with placebo in the frequency of occurrence of adverse events from the heart. However, as with other antipsychotics, caution should be exercised when using olanzapine in combination with drugs that can prolong the QT interval, especially in elderly patients, with congenital QT interval prolongation, chronic heart failure, myocardial hypertrophy, hypokalemia and hypomagnesemia .
Thromboembolism
With the use of olanzapine, very rarely (<0.01%) cases of venous thromboembolism have been reported. The causal relationship between olanzapine therapy and thrombosis has not been established. Since patients with schizophrenia often have acquired risk factors for venous thrombosis, all possible other factors (eg, immobilization) should be identified and preventive measures taken.
Blockade of dopamine receptors
In conditions in vitro olanzapine exhibits antagonism against dopamine receptors and, like other antipsychotics (antipsychotics), theoretically can suppress the action of levodopa and dopamine receptor agonists.
Postural hypotension
Postural hypotension was rarely observed in clinical studies of olanzapine in the elderly. As with other antipsychotics, in patients with olanzapine, it is recommended that patients who are older than 65 years have periodic monitoring of blood pressure.
Children and teenagers under 18 years of age
Olanzapine is not recommended for use in children and adolescents under 18 years due to lack of sufficient data on efficacy and safety. In short-term studies that were conducted in adolescents aged 13-17 years, there was a greater increase in body weight and a change in the concentration of lipids and prolactin than in similar studies in adults.