Product image of Norpen Oro (Olanzapine) supplied by GNH India

Norpen Oro

Active Ingredient:
Olanzapine
Origin:
EU

Norpen Oro (Olanzapine)

Olanzapine, the active ingredient in Norpen Oro, is a second‑generation (atypical) antipsychotic presented as an oral tablet for oral use. It is indicated for the treatment of schizophrenia and for managing manic episodes of bipolar disorder in adult patients under medical supervision and through a prescription.
GNH India supplies Norpen Oro as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide with a focus on quality assurance and regulatory compliance across EU and global markets.

Manufacturer / TM Owner

Norma Hellas S.A.

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Indications & Clinical Uses

Olanzapine is an atypical antipsychotic that modulates dopamine and serotonin pathways in psychotic and mood disorders.

  • Schizophrenia: Reduces psychotic symptoms such as delusions, hallucinations, and thought disorder.
  • Bipolar disorder (manic episodes): Controls acute manic symptoms and stabilizes mood.
  • Schizoaffective disorder: Improves both psychotic and mood components of the illness.

How It Works

  • Olanzapine acts primarily as an antagonist at dopamine D2 and serotonin 5‑HT2A receptors, while also interacting with other neurotransmitter receptors including histamine H1, muscarinic, and adrenergic sites. This receptor profile leads to modulation of dopaminergic and serotonergic neurotransmission, contributing to its antipsychotic and mood‑stabilising effects.

Side Effects

Common Side Effects

  • Weight gain: Increased appetite and body weight.
  • Sedation: Drowsiness or feeling of tiredness.
  • Metabolic changes: Elevated blood glucose or lipid levels.
  • Dry mouth: Reduced salivation.
  • Constipation: Decreased bowel motility.
  • Extrapyramidal symptoms: Tremor or stiffness (less frequent).

Serious or Rare Side Effects

  • Neuroleptic malignant syndrome: Life‑threatening reaction with fever and muscle rigidity.
  • Agranulocytosis: Severe reduction in white blood cells.
  • Hyperglycaemia: Marked increase in blood sugar requiring medical attention.
  • Seizures: Rare occurrence of convulsive episodes.

Precautions & Warnings

Olanzapine requires careful monitoring in several clinical situations.

  • Cardiovascular risk: Assess for orthostatic hypotension and monitor blood pressure.
  • Metabolic monitoring: Regularly check weight, fasting glucose, and lipid profile.
  • Hepatic function: Use with caution in patients with liver impairment.
  • Elderly patients: Increased sensitivity to sedation and anticholinergic effects.
  • Pregnancy and lactation: Evaluate risk‑benefit ratio; use only if clearly needed.
  • Store at ambient temperature: Keep below 25°C in the original packaging, protect from moisture and direct sunlight.

Avoid Interactions

Olanzapine may interact with several medications that affect its metabolism or additive side‑effects.

Major Interactions (Avoid)

  • Strong CYP1A2 inducers (e.g., rifampicin, carbamazepine): May reduce olanzapine plasma levels.
  • CNS depressants (e.g., benzodiazepines, alcohol): Can enhance sedation and respiratory depression.

Moderate Interactions (Monitor Closely)

  • CYP1A2 inhibitors (e.g., fluvoxamine, ciprofloxacin): May increase olanzapine concentrations.
  • Anticholinergic agents: May exacerbate dry mouth and constipation.
  • QT‑prolonging drugs: Potential additive effect on cardiac repolarisation.

Frequently Asked Questions

Norpen Oro contains olanzapine, which is prescribed for adults with schizophrenia to control psychotic symptoms and for patients experiencing manic episodes of bipolar disorder to stabilize mood. It may also be used in schizoaffective disorder where both psychotic and mood symptoms are present.

Olanzapine works by blocking dopamine D2 receptors and serotonin 5‑HT2A receptors, reducing excessive dopaminergic and serotonergic activity that contributes to psychosis and mood instability. It also interacts with other receptors such as histamine, muscarinic, and adrenergic sites, which influence its therapeutic profile.

The dosage of Norpen Oro is individualized by the prescribing clinician based on the patient’s condition, response, and tolerability. The prescriber determines the appropriate strength and dosing schedule, which may be adjusted during treatment.

Safety of olanzapine in pregnancy or while breastfeeding has not been fully established. The prescriber should weigh potential benefits against risks, and use the medication only if clearly needed. Women who are pregnant, planning pregnancy, or nursing should discuss options with their healthcare provider.

To request Norpen Oro, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Norpen Oro (olanzapine) is a second‑generation antipsychotic offering efficacy for both psychotic and mood symptoms, often with a lower risk of extrapyramidal side‑effects compared with first‑generation agents. Compared with other atypicals, it may have a higher propensity for weight gain and metabolic changes, which clinicians monitor closely.

Norpen Oro should be stored at ambient temperature, preferably below 25 °C. Keep the tablets in the original container, protect them from moisture, heat and direct sunlight to maintain stability and potency.

Norpen Oro is taken orally, usually with or without food, as directed by the prescriber. The tablets should be swallowed whole with a glass of water and not crushed or chewed unless specifically advised by a healthcare professional.

Serious risks include neuroleptic malignant syndrome, a rare but life‑threatening reaction characterized by fever, muscle rigidity, and autonomic instability, as well as agranulocytosis, severe hyperglycaemia, and seizures. Patients should be monitored for early signs and seek immediate medical attention if they occur.

Norpen Oro is contraindicated in individuals with known hypersensitivity to olanzapine or any of its excipients. Caution is advised for patients with uncontrolled diabetes, severe hepatic impairment, or a history of neuroleptic malignant syndrome. The medication should be avoided in patients where the risk outweighs the therapeutic benefit.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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