Malignant neuroleptic syndrome. Malignant neuroleptic syndrome (CNS) can develop in the treatment of any neuroleptic, including Olanzapine. Clinical manifestations of CNS include a significant increase in body temperature, rigidity of the muscles, changes in mental status and vegetative disorders (unstable pulse or blood pressure, tachycardia, cardiac arrhythmias, increased sweating). Additional signs may include increased levels of creatine phosphokinase, myoglobinuria (rhabdomyolysis), and acute renal failure. Clinical manifestations of CNS or a significant increase in body temperature without other symptoms of NSA require the removal of all antipsychotics, including olanzapine.
Late dyskinesia. In comparative studies lasting more than 6 weeks, treatment with olanzapine was significantly less often accompanied by the development of dyskinesia requiring drug correction than haloperidol. However, the risk of tardive dyskinesia with prolonged therapy with neuroleptics should be considered. With the development of signs of tardive dyskinesia, a dose reduction or drug cancellation is recommended Olanzapine. Symptoms of tardive dyskinesia may increase or manifest after the drug is discontinued.
Application in elderly patients with psychosis in the background of dementia. Cerebrovascular adverse events (eg stroke, transient ischemic attack), including death, were noted in studies of olanzapine in elderly patients with psychosis on a background of dementia. In placebo-controlled studies, there was a higher incidence of cerebrovascular undesirable events in patients in the olanzapine group, compared with the placebo group (1.3% vs. 0.4%, respectively).
These patients had previous risk factors (cerebrovascular disorders (history), transient ischemic attack, hypertension, smoking),as well as concomitant diseases and / or medications, associated with time for cerebrovascular disorders.
The effectiveness of olanzapine in elderly patients with psychosis against 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% versus 1.5%, respectively). The main risk factors for increased mortality for this group of patients in the treatment with olanzapine are the age ≥80 years, sedation, concomitant use with benzodiazepines or the presence of lung pathology (eg, pneumonia with or without aspiration). Elderly patients with psychosis in the background of dementia who are receiving atypical psychotic therapy are at increased risk of death compared with placebo. Olanzapine It is not recommended for the treatment of patients with psychosis on the background of dementia.
There is insufficient evidence to establish differences in the incidence of cerebrovascular disorders and / or mortality (compared to placebo), and in the risk factors for this group of patients when taking olanzapine inward and with intramuscular injection.
Dysfunction of the liver. In some cases, taking the drug Olanzapine, usually in the early stages of therapy, was accompanied by a transient, asymptomatic increase in the parameters of hepatic transaminases (aspartate aminotransferase and alanine aminotransferase) in serum. There were rare cases of hepatitis. In very rare cases, hepatic cholestasis and other mixed liver damage were noted. Particular caution is needed when increasing aspartate aminotransferase and / or alanine aminotransferase levels in blood serum in patients with hepatic insufficiency, with limited functional liver reserve, or in patients receiving potentially hepatotoxic drugs. In the case of an increase in aspartate aminotransferase and / or alanine aminotransferase levels during treatment with olanzapine, careful monitoring of the patient and, if necessary, a reduction in dose are required.
Hyperglycemia and diabetes mellitus. There is a higher prevalence of diabetes mellitus in patients with schizophrenia. Very rarely there were cases of hyperglycemia, development of diabetes mellitus or exacerbation of pre-existing diabetes mellitus, ketoacidosis and diabetic coma.There is no established causal relationship between antipsychotic drugs and these conditions. Clinical monitoring of patients with diabetes mellitus or with risk factors for its development is recommended.
Hematologic changes. Application of the drug Olanzapine in patients with clozapine-dependent neutropenia or agranulocytosis (in the anamnesis) was not accompanied by relapses of these disorders.
Dopaminergic antagonism. Olanzapine exhibits antagonism against dopamine and, theoretically, can suppress the action of levodopa and dopamine agonists.
Parkinson's disease. It is not recommended to use olanzapine in the treatment of psychoses induced by dopamine receptor agonists in Parkinson's disease.
In clinical studies in patients with psychosis induced by the drug (dopamine receptor agonist) in Parkinson's disease, an increase in Parkinsonian symptoms 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.
Change in lipid profile. In placebo-controlled trials, patients who received olanzapine, undesirable changes in the lipid spectrum were observed. Clinical observation is recommended (see "Side effect").
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.
Convulsions. Olanzapine should be used with caution in patients with a history of convulsions or exposed to factors that reduce the threshold of convulsive readiness. In such patients, seizures were rare in the treatment with olanzapine.
M-holinoblocking activity. In clinical trials, olanzapine therapy was rarely accompanied by m-cholinoblocking side effects. However, clinical experience with olanzapine in patients with concomitant diseases is limited, so caution should be exercised in prescribing olanzapine to clinically ill patientssignificant prostatic hyperplasia, paralytic intestinal obstruction, closed-angle glaucoma, and similar conditions.
Neutropenia. Caution should be applied olanzapine in patients with low leukocyte and / or neutrophil count in the blood; receiving drugs that can cause neutropenia; with oppression of bone marrow function due to radiation or chemotherapy disease; 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.
Duration of the interval QT. In clinical studies, clinically significant lengthening of the interval QT (interval QT with the adjustment of Friederation [QTcF] ≥500 msec in patients with baseline QTcF <500 msec) in patients who received 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 in prescribing olanzapine in combination with drugs that can lengthen the interval QT, especially in elderly patients, with congenital lengthening of the interval QT, congestive heart failure, myocardial hypertrophy, hypokalemia and hypomagnesemia.
Abolition of therapy. In the case of a sharp abolition of olanzapine, extremely rarely (<0.01%) was reported on the acute development of sweating, insomnia, tremor, anxiety, nausea and vomiting.
Thromboembolism. Very rarely (<0.01%) reported on the development of venous thromboembolism in the background of olanzapine therapy. The presence of a causal relationship between the administration of olanzapine and venous thromboembolism has not been established. However, given that patients with schizophrenia often have acquired risk factors for venous thromboembolism, it is required to conduct an overall assessment of all possible risk factors for the development of this complication, including immobilization of patients, and to take the necessary preventive measures.
Total activity against the central nervous system. Given the main effect of olanzapine on the central nervous system, caution should be exercised when using olanzapine in combination with other central-action drugs and alcohol.
Postural hypotension. Postural hypotension was rarely observed in clinical studies of olanzapine in the elderly. Just as with the use of other antipsychotics, in the case of olanzapine, patients older than 65 years are advised to periodically monitor 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 the 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.