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Prescription vs.OTC: Prescription by Doctor required
Last Updated: April 13, 2019

Olanzapine is used to treat certain mood disorders like schizophrenia or bipolar disorder. It can also be used in combination with other medications to treat depression. It is an antipsychotic drug that helps improve the mental condition of patients suffering from hallucinations too. All these symptoms occur due an imbalance of chemicals in the brain. This medication is prescribed only to adults and children above the age of 13.

Olanzapine should be always taken under the supervision of a doctor. Never use it without the approval of your doctor. Also, it is important to take the recommended doses regularly. If you have missed a dose, take it as quickly as possible. However, f it’s already near the time for the next dose, skip it. Don’t take two doses as it will result in undesirable effects on your body.

Certain precautions must be observed before taking Olanzapine. Elderly patients suffering from dementia shouldn’t use this medication. Also, people suffering from high blood sugar should take a doctor’s opinion before using this medication. Any history of blood clotting issues, liver disease or kidney issues should be mentioned to the doctor. Any form of allergies must be mentioned to the doctor as well. Also, it is advisable to avoid alcohol during the treatment period.

Olanzapine might also cause certain side effects. Common side effects are: weight gain (especially among young adults), headache, dizziness, problems with speech or memory, tremors or shaking, dry mouth, stomach pain, constipation etc. These conditions usually go away on their own. However, if the symptoms are severe, it is advisable to consult with your doctor. Some rare but serious side effects also occur due to this medication. These symptoms are: uncontrolled muscle moments, swelling of hands or feet, hallucinations, fever, swollen gums, painful mouth sores, liver problem, yellowing eyes and skin, stiff muscles etc. If any of these symptoms arise, immediately take medical help.

Olanzapine should be stored at room temperature. It should be kept away from the reach of children or pets.

Information given here is based on the salt and content of the medicine. Effect and uses of medicine may vary from person to person. It is advicable to consult a Psychiatrist before using this medicine.

Avoid if you have a known allergy to Olanzapine or any other Beta-lactam antibiotics.
In addition to its intended effect, Olanzapine may cause some unwanted effects too. In such cases, you must seek medical attention immediately. This is not an exhaustive list of side effects. Please inform your doctor if you experience any adverse reaction to the medication.


Moderate Less Common


Moderate Less Common


Moderate Less Common

Chest pain

Moderate Less Common

Dry mouth

Moderate Less Common

Loss of libido

Moderate Less Common


Moderate Less Common

How long is the duration of effect?

The effect lasts for an average duration of 20 to 40 hours after onset of action.

What is the onset of action?

The effect can be observed within 5 to 8 hours of oral administration.

Are there any pregnancy warnings?

Insufficient data is available for the use of this medicine in pregnant women. Use this medicine only if clearly needed under the supervision of the doctor.

Is it habit forming?

No habit forming tendency has been reported.

Are there any breast-feeding warnings?

Avoid breastfeeding if you are taking this medicine. Take this medicine only if clearly needed. However, monitoring of undesired effects is necessary.

Are there any missed dose instructions?

Take the missed dose as soon as possible. If it is almost time for the next dose, skip the dose and follow the regular schedule.

Are there any overdose instructions?

Seek emergency medical treatment or contact the doctor in case of an overdose.


United States


Below is the list of medicines, which contains Olanzapine as ingredient
Torrent Pharmaceuticals Ltd
Cipla Ltd
Sun Pharma Laboratories Ltd
Mankind Pharmaceuticals Ltd
Arinna Lifesciences Pvt. Ltd
Mankind Pharmaceuticals Ltd
Alkem Laboratories Ltd
Kivi Labs Ltd
Alkem Laboratories Ltd
Zeus Pharma
Strides Shasun Limited
Sun Pharma Laboratories Ltd
Linux Laboratories
Torrent Pharmaceuticals Ltd
Strides Shasun Limited
Intas Pharmaceuticals Ltd
Intas Pharmaceuticals Ltd
Talent Healthcare
Olanzapine efficacy in schizophrenia is mediated through a combination of Dopamine and Serotonin type 2 receptor site antagonism. The mechanism of action of olanzapine in the treatment of acute manic or mixed episodes associated with bipolar I disorder is unknown.
Whenever you take more than one medicine, or mix it with certain foods or beverages, you"re at risk of a drug interaction.

Interaction with Disease


It is strictly advised to patients who suffer from Dementia, Tardive Dyskinesia, Neuroleptic Malignant Syndrome, Central Nervous System Depression, Diabetes and Seizure disorders should not use Olanzapine.

Interaction with Alcohol


Interaction with alcohol is unknown. It is advisable to consult your doctor before consumption.

Interaction with Lab Test


Information not available.

Interaction with Food


You should take Olanzapine before food. If you are advised to take this medicine after food, then sufficient time gap should be maintained in order to avoid undesired effects.

Interaction with Medicine


Patients should not use Olanzapine in combination with Acarbose, Amlodipine, Cetirizine, Diazepam, Tramadol and Atropine.
Disclaimer: The information produced here is best of our knowledge and experience and we have tried our best to make it as accurate and up-to-date as possible, but we would like to request that it should not be treated as a substitute for professional advice, diagnosis or treatment.

Lybrate is a medium to provide our audience with the common information on medicines and does not guarantee its accuracy or exhaustiveness. Even if there is no mention of a warning for any drug or combination, it never means that we are claiming that the drug or combination is safe for consumption without any proper consultation with an expert.

Lybrate does not take responsibility for any aspect of medicines or treatments. If you have any doubts about your medication, we strongly recommend you to see a doctor immediately.

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Table of Content
About Olanzapine
What are the uses of Olanzapine
What are the contraindications of Olanzapine ?
What are the side effects of Olanzapine ?
Key highlights of Olanzapine
What are the dosage instructions?
Where is the Olanzapine approved?
Medicines containing Olanzapine
How does medicine works?
What are the interactions of Olanzapine ?