Olanzapina Benel (Olanzapine)

Olanzapine is indicated for several psychiatric conditions that involve dopamine and serotonin dysregulation.

• Schizophrenia: helps reduce hallucinations, delusions and thought disorder.
• Bipolar I disorder (manic episodes): aids in controlling mood elevation and agitation.
• Bipolar I disorder (maintenance): supports long‑term mood stability.
• Major depressive disorder with psychotic features: augments antidepressant therapy to alleviate psychotic symptoms.
• Schizoaffective disorder: mitigates both psychotic and mood components.

• Olanzapine exerts its antipsychotic effect by antagonizing dopamine D2 receptors and serotonin 5‑HT2A receptors, with additional activity at histamine H1, muscarinic and α‑adrenergic receptors. This receptor profile reduces dopaminergic transmission in mesolimbic pathways and modulates serotonergic signaling, helping to stabilize mood and psychotic symptoms.

Olanzapine may cause a range of adverse reactions, from mild to potentially life‑threatening.

Common Side Effects

• Weight gain: increased appetite and caloric intake.
• Sedation: drowsiness or feeling of being slowed down.
• Dry mouth: reduced salivation.
• Constipation: decreased bowel motility.
• Elevated triglycerides: rise in blood lipid levels.
• Orthostatic hypotension: light‑headedness on standing.

Serious or Rare Side Effects

• Neuroleptic malignant syndrome: high fever, muscle rigidity, autonomic instability.
• Tardive dyskinesia: involuntary, repetitive movements, often of the face.
• Hyperglycaemia/diabetes mellitus: significant rise in blood glucose.
• Seizures: convulsive episodes, especially in predisposed individuals.
• Agranulocytosis: dangerously low white‑blood cell count.
• Severe allergic reactions: anaphylaxis, angio‑edema.

Precautions

• Monitor metabolic parameters: regularly check weight, fasting glucose and lipid profile.
• Assess for movement disorders: watch for early signs of tardive dyskinesia.
• Evaluate cardiovascular status: screen for orthostatic hypotension and ECG changes.
• Use caution in patients with hepatic or renal impairment: dose adjustments may be needed.
• Avoid abrupt discontinuation: taper gradually to reduce withdrawal effects.
• Store at ambient temperature: keep in original packaging, protect from moisture.

Interactions

Major Interactions (Avoid)

• CNS depressants: may increase sedation and respiratory depression.
• Strong CYP1A2 inhibitors: elevate olanzapine plasma concentrations.
• Anticholinergic drugs: additive dry‑mouth and constipation effects.
• QT‑prolonging agents: increase risk of cardiac arrhythmias.
• Alcohol: enhances central nervous system depression.

Moderate Interactions (Monitor Closely)

• Smoking: induces CYP1A2, potentially lowering olanzapine levels.
• Carbamazepine: may reduce olanzapine exposure.
• Fluoxetine/sertraline: can modestly increase olanzapine concentrations.
• Antihypertensive agents: may potentiate hypotensive effects.
• Lithium: combined use may increase risk of neurotoxicity.

Metatitle: Olanzapina Benel Tablet (Olanzapine) | GNH India Metadesc: GNH India supplies Olanzapina Benel (Olanzapine), a atypical antipsychotic for schizophrenia and bipolar disorder. Request  ...