Olanzapine Viatris (Olanzapine)

Olanzapine Viatris is an atypical antipsychotic that modulates neurotransmitter activity in several psychiatric conditions.

• Schizophrenia: helps reduce hallucinations, delusions and thought disorder.
• Bipolar I Disorder (Manic Phase): assists with mood stabilization and reduces manic symptoms.
• Bipolar II Disorder (Depressive Phase): used as adjunct therapy to improve depressive symptoms.

• Olanzapine acts primarily by antagonising dopamine D2 receptors and serotonin 5‑HT2A receptors in the central nervous system. This combined blockade modulates dopaminergic and serotonergic neurotransmission, which helps to normalize the altered signaling pathways associated with psychotic and mood disorders.

Olanzapine may cause a range of adverse reactions, most of which are dose‑dependent and reversible upon discontinuation.

Common Side Effects

• Weight gain
• Sedation
• Dry mouth
• Constipation
• Increased appetite
• Dizziness

Serious or Rare Side Effects

• Neuroleptic malignant syndrome
• Tardive dyskinesia
• Severe hyperglycaemia
• Agranulocytosis
• Seizures
• Orthostatic hypotension

When prescribing Olanzapine Viatris, clinicians should consider several safety aspects.

• Monitor: regular blood glucose and lipid monitoring for metabolic changes.
• Assess: baseline and periodic assessment of weight and BMI.
• Caution: use in patients with a history of cardiovascular‑c​  
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"interactions": "Olanzapine Viatris can interact with several other medicines, influencing its effectiveness or safety profile.

Major Interactions (Avoid)

• Strong CYP1A2 inhibitors (e.g., fluvoxamine) – may increase olanzapine plasma levels.
• CNS depressants (e.g., benzodiazepines, opio‑  .

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