Olanzapine, also known by its commercial name, is an antipsychotic medication primarily used to treat conditions such as schizophrenia and bipolar disorder. This medication functions by affecting certain chemicals in the brain, which can help to improve symptoms associated with these mental health conditions. Olanzapine is available in tablet form for oral administration. It is classified chemically as a thienobenzodiazepine and is structurally related to clozapine. Olanzapine is intended for use in adult patients only, and its efficacy and side effects may vary depending on the individual.

Price of Olanzapine

Olanzapine costs between £0.55 and £1.16 per pills. It depends on the size of the pack and the amount of active ingredient (30 or 360 mg).

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Olanzapine is an atypical antipsychotic medication used to treat schizophrenia and bipolar disorder. It is also prescribed as an add-on treatment for major depressive disorder. Olanzapine works by balancing certain natural substances in the brain, helping to improve mood, thinking, and behavior. This medication is available in tablet and injectable forms, with different strengths for different conditions. It should be used as directed by a healthcare professional, and the dosage may vary based on individual needs. Olanzapine is typically taken once daily, with or without food.


Olanzapine should not be taken by individuals who have a known allergy or hypersensitivity to the drug. It is important to inform your healthcare provider if you have any medical conditions, especially liver or kidney problems, diabetes, seizures, high blood pressure, or a history of heart problems. This medication may cause drowsiness, dizziness, or blurred vision, which can impair your ability to perform tasks that require alertness. Drinking alcohol or using cannabis can increase these side effects, so it is advised to avoid or limit their consumption. Olanzapine may also cause a condition called neuroleptic malignant syndrome (NMS), which is characterized by high fever, muscle stiffness, confusion, and changes in heart rate and blood pressure. If any of these symptoms occur, seek immediate medical attention.

Managing Side Effects

Common side effects of olanzapine include weight gain, increased appetite, constipation, dry mouth, drowsiness, and dizziness. It may also cause restlessness, tremors, or muscle stiffness. Notify your healthcare provider if any of these side effects persist or worsen. To manage weight gain, a balanced diet and regular exercise are recommended. Drinking plenty of water and maintaining good oral hygiene can help with dry mouth and constipation. To reduce the risk of dizziness, rise slowly from a sitting or lying position. If you experience any unusual or severe side effects, contact your doctor right away.

Dosage Guide

Olanzapine dosage is determined by the condition being treated, the patient’s age, and their response to the medication. It is important to follow the prescribed dosage and schedule provided by your healthcare provider. If a dose is missed, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your regular dosing schedule. Do not double the dose to catch up. In case of overdose, seek immediate medical attention. Symptoms of overdose may include extreme drowsiness, rapid heart rate, confusion, seizures, and fainting.

Understanding Drug Interactions

Olanzapine may interact with other medications and cause potentially serious side effects. Inform your healthcare provider of all the drugs you are currently taking, including prescription, over-the-counter, and herbal products. Olanzapine may have a moderate interaction with medications that cause drowsiness, such as sedatives, tranquilizers, or sleeping pills. Combining these medications can increase the risk of excessive sedation, breathing problems, or unconsciousness. Other drugs that may interact with olanzapine include antibiotics, antidepressants, anticonvulsants, and antihypertensive medications. Your healthcare provider will monitor your medication regimen to ensure it is safe and effective.

Common Questions

  • Can olanzapine be used during pregnancy or while breastfeeding?
  • Olanzapine may pose risks to the fetus, so it should only be used during pregnancy if the potential benefits outweigh the potential risks. It is not recommended to breastfeed while taking olanzapine, as it may pass into breast milk.

  • How long does it take for olanzapine to start working?
  • The onset of olanzapine’s effects varies from person to person. Some individuals may notice improvements in their symptoms within a few days, while others may take several weeks to experience the full benefits of the medication.

  • Can I drink alcohol while taking olanzapine?
  • Drinking alcohol while taking olanzapine is not recommended, as it may increase the risk of drowsiness and dizziness. It can also worsen certain side effects of the medication.

  • Are there any dietary restrictions while using olanzapine?
  • Olanzapine does not have specific dietary restrictions. However, it may cause weight gain and increased appetite in some individuals, so maintaining a healthy diet and exercising regularly is recommended.

  • Can I suddenly stop taking olanzapine?
  • No, you should not abruptly stop taking olanzapine without consulting your healthcare provider. Gradual dose reduction is usually recommended to minimize the risk of withdrawal symptoms.


2.5mg, 5mg, 7.5mg

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