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OLANZAPINE 2.5mg, 5mg, 10mg, 15mg AND – patient leaflet, side effects, dosage

Updated:
Key facts
Status:
Prescription only (POM)
Medicine strength:
15 mg
Contains active substance:
ATC code:

Patient leaflet - Olanzapine 15 mg film-coated tablets

1. What Olanzapine Film-coated Tablets are and what they are used for

2. What you need to know before you take Olanzapine Film-coated Tablets

  • a combination of fever, faster breathing, sweating, muscle stiffness and drowsiness or sleepiness (the frequency of this side effect cannot be estimated from the available data)

    Store below 25°C.

3. How to take Olanzapine Film-coated Tablets

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required.

4. Possible side effects

5. How to store Olanzapine Film-coated Tablets

These measures will help to protect the environment.

Tell your doctor if any of the below side effects start bothering you.

6. Contents of the pack and other information

Very common side effects (may affect more than 1 in 10 people) include:

6.

Tell your doctor if you are taking, have recently taken or might take any other medicines.

WHAT OLANZAPINE FILM-COATED

1.

CONTENTS OF THE PACK AND OTHER INFORMATION

  • weight gain

TABLETS ARE AND WHAT THEY ARE USED FOR

  • sleepiness

In particular, tell your doctor if you are taking:

What Olanzapine Film-coated Tablets contain

  • increases in the levels of prolactin in the blood
  • medicines for Parkinson’s disease

Olanzapine Film-coated Tablets belong to a group of medicines called antipsychotics and are used to treat the following conditions:

  • The active substance is olanzapine. Each Olanzapine Film-coated Tablet contains either 2.5mg, 5mg, 10mg, 15mg or 20mg of the active substance. The exact amount is shown on your Olanzapine tablet pack.

In the early stages of treatment, some people may feel dizzy or faint (with a slow heart rate), especially when getting up from a lying or sitting position. This will usually pass on its own but if it does not, tell your doctor.

  • carbamazepine (an anti-epileptic and mood stabiliser), fluvoxamine (an antidepressant) or ciprofloxacin (an antibiotic) - it may be necessary to change your Olanzapine dose
  • Schizophrenia, a disease with symptoms such as hearing, seeing or sensing things which are not there, mistaken beliefs, unusual suspiciousness, and becoming withdrawn. People with this disease may also feel depressed, anxious or tense.

    • The other ingredients are (tablet core) lactose monohydrate, hyprolose (E463), crospovidone (E1202), microcrystalline cellulose (E460), magnesium stearate (E572) and (tablet coating) polyvinyl alcohol, talc (E553b), titanium dioxide (E171), lactose monohydrate and triacetin.

Olanzapine Film-coated Tablets with alcohol

Common side effects (may affect up to 1 in 10 people) include:

Do not drink any alcohol if you have been given Olanzapine Film-coated Tablets as Olanzapine and alcohol together may make you feel drowsy.

  • Moderate to severe manic episodes, a condition with symptoms of excitement or euphoria

    • changes in the levels of some blood cells and circulating fats and early in treatment, temporary increases in liver enzymes;
    • increases in the level of sugars in the blood and urine

Pregnancy and breast-feeding

Olanzapine has been shown to prevent recurrence of these symptoms in patients with bipolar disorder whose manic episode has responded to olanzapine treatment.

What Olanzapine Film-coated Tablets look like and contents of the pack

  • increases in levels of uric acid and creatine phosphokinase in the blood

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor for advice before taking this medicine. You should not be given this medicine when breast-feeding, as small amounts of Olanzapine Film-coated Tablets can pass into breast milk.

Olanzapine 2.5mg Film-coated Tablets are off-white to pale yellow and debossed with “2.5” on one side and blank on the other.

  • feeling more hungry
  • dizziness

WHAT YOU NEED TO KNOW BEFORE YOU TAKE OLANZAPINE FILM-COATED TABLETS

Olanzapine 5mg Film-coated Tablets are off-white to pale yellow and debossed with “5” on one side and blank on the other.

2.

  • restlessness
  • tremor

    Olanzapine 10mg Film-coated Tablets are off-white to pale yellow and debossed with “10” on one side and blank on the other.

  • unusual movements (dyskinesias)

The following symptoms may occur in newborn babies, of mothers that have used Olanzapine in the last trimester (last three months of their pregnancy): shaking, muscle stiffness and/or weakness, sleepiness, agitation, breathing problems, and difficulty in feeding. If your baby develops any of these symptoms you may need to contact your doctor.

Do not take Olanzapine Film-coated Tablets:

  • constipation
  • if you are allergic (hypersensitive) to olanzapine or any of the other ingredients of this medicine (listed in section 6). An allergic reaction may be recognised as a rash, itching, a swollen face, swollen lips or shortness of breath. If this has happened to you, tell your doctor.

    Olanzapine 15mg Film-coated Tablets are off-white to pale yellow and debossed with “15” on one side and blank on the other.

  • dry mouth
  • rash

    Olanzapine 20mg Film-coated Tablets are off-white to pale yellow and debossed with “20” on one side and blank on the other.

  • loss of strength
  • extreme tiredness
  • if you have been previously diagnosed with eye problems such as certain kinds of glaucoma (increased pressure in the eye).
  • water retention leading to swelling of the hands, ankles or feet, fever, joint pain and sexual dysfunction such as decreased libido in males and females or erectile dysfunction in males

Driving and using machines

Olanzapine 2.5mg, 5mg, 10mg and 15mg Film-coated Tablets are available in 28, 50, 56, 60 and 70 tablet packs.

There is a risk of feeling drowsy when you are given Olanzapine Film-coated Tablets. If this happens do not drive or operate any tools or machines. Tell your doctor.

Warnings and precautions

Olanzapine 20mg Film-coated Tablets are available in 28 tablet packs. Not all pack sizes may be marketed.

Talk to your doctor or pharmacist before you take Olanzapine Film-coated Tablets.

Uncommon side effects (may affect up to 1 in 100 people) include:

Olanzapine Film-coated Tablets contain lactose

  • The use of Olanzapine Film-coated Tablets in elderly patients with dementia is not recommended as it may have serious side effects.

    • hypersensitivity (e.g. swelling in the mouth and throat, itching, rash)

If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product.

Marketing Authorisation Holder

  • diabetes or the worsening of diabetes, occasionally associated with ketoacidosis (ketones in the blood and urine) or coma
  • Medicines of this type may cause unusual movements mainly of the face or tongue. If this happens after you have been given Olanzapine Film-coated Tablets tell your doctor.

    Athlone Pharmaceuticals Limited, Ballymurray, Co. Roscommon, Ireland.

  • seizures, usually associated with a history of seizures (epilepsy)

3.

Manufacturer

  • Very rarely, medicines of this type cause a combination of fever, faster breathing, sweating, muscle stiffness and drowsiness or sleepiness. If this happens, contact your doctor at once.

    • muscle stiffness or spasms (including eye movements)

HOW TO TAKE OLANZAPINE FILM-COATED TABLETS

Kent Pharmaceuticals Limited, Repton Road, Measham, DE12 7DT, U.K. Kent Pharmaceuticals Limited, Crowbridge Road, Ashford, Kent, TN24 0GR, U.K.

  • restless legs syndrome
  • problems with speech

Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.

  • Weight gain has been seen in patients taking Olanzapine Film-coated Tablets. You and your doctor should check your weight regularly. Consider referral to a dietician or help with a diet plan if necessary.

    • slow heart rate

      PL 30464/0097-0102

    • stuttering

Your doctor will tell you how many Olanzapine Film-coated Tablets to take and how long you should continue to take them. The daily dose of Olanzapine Film-coated Tablets is between 5 and 20mg.

  • sensitivity to sunlight

    This leaflet was last revised in August 2021

  • High blood sugar and high levels of fat (triglycerides and cholesterol) have been seen in patients taking Olanzapine Film-coated Tablets. Your doctor should do blood tests to check blood sugar and certain fat levels before you start taking Olanzapine Film-coated Tablets and regularly during treatment.
  • bleeding from the nose
  • abdominal distension

Consult your doctor if your symptoms return but do not stop taking Olanzapine Film-coated Tablets unless your doctor tells you to.

  • drooling
  • memory loss or forgetfulness
  • Tell the doctor if you or someone else in your family has a history of blood clots, as medicines like these have been associated with the formation of blood clots.
  • urinary incontinence; lack of ability to urinate

You should take your Olanzapine Film-coated Tablets once a day following the advice of your doctor. Try to take your tablets at the same time each day. It does not matter whether you take them with or without food.

  • hair loss
  • absence or decrease in menstrual periods

If you suffer from any of the following illnesses tell your doctor as soon as possible:

  • changes in breasts in males and females such as abnormal production of breast milk or abnormal growth
  • Stroke or “mini” stroke (temporary symptoms of stroke)

    Olanzapine Film-coated Tablets are for oral use. You should swallow the Olanzapine Film-coated Tablets whole with water.

  • Parkinson’s disease
  • Prostate problems

    Rare side effects (may affect up to 1 in 1000 people) include:

  • A blocked intestine (Paralytic ileus)

    If you take more Olanzapine Film-coated Tablets than you should

  • lowering of normal body temperature
  • Liver or kidney disease

    Patients who have taken more Olanzapine Film-coated Tablets than they should have experienced the following symptoms: rapid beating of the heart, agitation/aggressiveness, problems with speech, unusual movements (especially of the face or tongue) and reduced level of consciousness. Other symptoms may be: acute confusion, seizures (epilepsy), coma, a combination of fever, faster breathing, sweating, muscle stiffness and drowsiness or sleepiness, slowing of the breathing rate, aspiration, high blood pressure or low blood pressure, abnormal rhythms of the heart.

  • abnormal rhythms of the heart
  • Blood disorders
  • sudden unexplained death
  • Heart disease
  • inflammation of the pancreas causing severe stomach pain, fever and sickness
  • Diabetes
  • liver disease appearing as yellowing of the skin and white parts of the eyes
  • Seizures
  • muscle disease presenting as unexplained aches and pains
  • If you know that you may have salt depletion as a result of prolonged severe diarrhoea and vomiting (being sick) or usage of diuretics (water tablets)
  • prolonged and/or painful erection

Very rare side effects include serious allergic reactions such as Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS). DRESS appears initially as flu-like symptoms with a rash on the face and then with an extended rash, high temperature, enlarged lymph nodes, increased levels of liver enzymes seen in blood tests and an increase in a type of white blood cell (eosinophilia).

See also section 4, “Possible side effects”.

Contact your doctor or hospital straight away if you experience any of the above symptoms. Show the doctor your pack of tablets.

If you suffer from dementia, you or your carer/relative should tell your doctor if you have ever had a stroke or “mini” stroke.

If you forget to take Olanzapine Film-coated Tablets

Take your tablets as soon as you remember. Do not take two doses in one day.

As a routine precaution, if you are over 65 years your blood pressure may be monitored by your doctor.

While taking Olanzapine, elderly patients with dementia may suffer from stroke, pneumonia, urinary incontinence, falls, extreme tiredness, visual hallucinations, a rise in body temperature, redness of the skin and have trouble walking. Some fatal cases have been reported in this particular group of patients.

If you stop taking Olanzapine Film-coated Tablets

Do not stop taking your tablets just because you feel better. It is important that you carry on taking Olanzapine Film-coated Tablets for as long as your doctor tells you.

Children and adolescents

Olanzapine Film-coated Tablets are not suitable for patients who are under 18 years.

If you suddenly stop taking Olanzapine Film-coated Tablets, symptoms such as sweating, unable to sleep, tremor, anxiety or nausea and vomiting might occur. Your doctor may suggest you to reduce the dose gradually before stopping treatment.

In patients with Parkinson's disease Olanzapine Film-coated Tablets may worsen the symptoms.

Other medicines and Olanzapine Film-coated Tablets

Only take other medicines while you are on Olanzapine Film-coated Tablets if your doctor tells you that you can. You might feel drowsy if Olanzapine Film-coated Tablets are taken in combination with antidepressants or medicines taken for anxiety or to help you sleep (tranquilisers).

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

Colours Customer: Athlone Designer: DOB (AWG)

Product: Olanzapine Film-coated Tablets

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About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk)

Last revision stated in the text: August 2021

What the sections and the side effect frequencies mean: How to read a patient leaflet

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Olanzapine 15 mg film-coated tablets

What these facts mean

Prescription needed?? Yes, prescription-only medicine (POM)
Active substance? Olanzapine
Strength? 15 mg
Pharmaceutical form? Oral tablet
Off-white to pale yellow, round, biconvex, film-coated tablets, debossed with “J” on one side and “15” on the other
How is it taken? Oral
Excipients? Lactose monohydrate, Hydroxypropylcellulose (E463), Crospovidone (E1202), Microcrystalline cellulose (E460), Magnesium stearate (E572), Polyvinyl alcohol – part hydrolyzed, Titanium dioxide (E171), Talc (E553b), Triacetin
Pack sizes 28 tablet
Is it available?? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life? 2 years.
Storage Store below 25°C.
Drug group (ATC)? Psycholeptics, diazepines, oxazepines, thiazepines and oxepines
  1. N Nervous system drugs
    1. N05 Psycholeptics
      1. N05A Antipsychotics
        1. N05AH Diazepines, oxazepines, thiazepines and oxepines antipsychotic drugs
          1. N05AH03 olanzapine
Marketing authorisation? PL 20416/0496 (first authorised 18 February 2025)
Marketing authorisation holder? Crescent Pharma Limited
Codes? GTIN 5017123734137 · BNF 04020100

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 11.1.0 of 9 November 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.