olanzapine (oral)

Pronunciation: oh LANZ a peen

Brand: ZyPREXA, ZyPREXA Zydis

Olanzapine 15 mg-TEV

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Olanzapine 2.5 mg-TEV

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Olanzapine 5 mg-TEV

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Olanzapine ODT 5 mg-APO

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Zyprexa 20 mg

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Olanzapine 10 mg-TEV

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Olanzapine 15 mg-APO

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oval, blue, imprinted with APO, OLA 15

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Olanzapine 2.5 mg-APO

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Olanzapine ODT 15 mg-APO

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Olanzapine ODT 20 mg-APO

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Zyprexa 15 mg

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Olanzapine 20 mg-TEV

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Olanzapine 7.5 mg-APO

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Olanzapine 7.5 mg-TEV

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Zyprexa 10 mg

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Zyprexa 5 mg

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Zyprexa Zydis 5 mg

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Olanzapine 10 mg-APO

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Olanzapine 20 mg-APO

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Olanzapine 5 mg-APO

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Olanzapine ODT 10 mg-APO

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Zyprexa 2.5 mg

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Zyprexa 7.5 mg

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Zyprexa Zydis 10 mg

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What is the most important information I should know about olanzapine?

Olanzapine is not approved for use in psychotic conditions related to dementia. Olanzapine may increase the risk of death in older adults with dementia-related conditions.

What is olanzapine?

Olanzapine is an antipsychotic medication that affects chemicals in the brain.

Olanzapine is used to treat the symptoms of psychotic conditions such as schizophrenia and bipolar disorder (manic depression) in adults and children who are at least 13 years old.

Olanzapine is sometimes used together with other antipsychotic medications or antidepressants.

Olanzapine may also be used for purposes not listed in this medication guide.

What should I discuss with my healthcare provider before taking olanzapine?

You should not take olanzapine if you are allergic to it.

Olanzapine is not approved for use in psychotic conditions related to dementia. Olanzapine may increase the risk of death in older adults with dementia-related conditions.

Long-term use of olanzapine can cause a serious movement disorder that may not be reversible. Symptoms of this disorder include uncontrollable muscle movements of your lips, tongue, eyes, face, arms, or legs. The longer you take olanzapine, the more likely you are to develop this movement disorder. The risk of this side effect is higher in women and older adults.

To make sure olanzapine is safe for you, tell your doctor if you have:

  • liver disease;
  • heart disease, high or low blood pressure;
  • a history of low white blood cell (WBC) counts;
  • high cholesterol or triglycerides;
  • a history of heart failure, heart attack, or stroke;
  • a history of breast cancer;
  • seizures or epilepsy;
  • diabetes;
  • an enlarged prostate or difficulty urinating;
  • bowel problems; or
  • narrow-angle glaucoma.

FDA pregnancy category C. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

Taking antipsychotic medication during the last 3 months of pregnancy may cause problems in the newborn, such as withdrawal symptoms, breathing problems, feeding problems, fussiness, tremors, and limp or stiff muscles. However, you may have withdrawal symptoms or other problems if you stop taking your medicine during pregnancy. If you become pregnant while taking olanzapine, do not stop taking it without your doctor's advice.

Olanzapine can pass into breast milk and may harm a nursing baby. You should not breast-feed while using olanzapine.

The olanzapine orally disintegrating tablet (Zyprexa Zydis) may contain phenylalanine. Talk to your doctor before using this form of olanzapine if you have phenylketonuria (PKU).

How should I take olanzapine?

Follow all directions on your prescription label. Your doctor may occasionally change your dose to make sure you get the best results. Do not take this medicine in larger or smaller amounts or for longer than recommended.

Olanzapine can be taken with or without food.

Olanzapine is usually taken once a day. Olanzapine may be only part of a complete program of treatment that also includes counseling and other psychological support programs. Follow your doctor's instructions.

To take olanzapine orally disintegrating tablet (Zyprexa Zydis):

  • Keep the tablet in its blister pack until you are ready to take it. Open the package and peel back the foil from the tablet blister. Do not push a tablet through the foil or you may damage the tablet.
  • Using dry hands, remove the tablet and place it in your mouth. It will begin to dissolve right away.
  • Do not swallow the tablet whole. Allow it to dissolve in your mouth without chewing.
  • Swallow several times as the tablet dissolves. If desired, you may drink liquid to help swallow the dissolved tablet.

Call your doctor if your symptoms do not improve, or if they get worse while using olanzapine.

Do not stop using olanzapine suddenly, even if you feel fine. Stopping suddenly may cause serious side effects.

Olanzapine can cause high blood sugar (hyperglycemia). If you are diabetic, check your blood sugar levels on a regular basis while you are taking olanzapine.

You may gain weight or have high cholesterol and triglycerides (types of fat) while taking this medicine, especially if you are a teenager. Your blood may need to be tested often. Visit your doctor regularly.

If you are taking a combination of drugs, use all medications as directed by your doctor. Read the medication guide or patient instructions provided with each medication. Do not change your doses or medication schedule without your doctor's advice.

Store at room temperature away from moisture, heat, and light.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include drowsiness, agitation, aggression, slurred speech, confusion, increased heart rate, jerky or uncontrolled muscle movements, trouble breathing, or fainting.

What should I avoid while taking olanzapine?

Olanzapine may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.

Drinking alcohol can increase sleepiness caused by olanzapine.

Avoid becoming overheated or dehydrated. Drink plenty of fluids, especially in hot weather and during exercise. It is easier to become dangerously overheated and dehydrated while you are taking olanzapine.

What are the possible side effects of olanzapine?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • uncontrolled muscle movements in your face (chewing, lip smacking, frowning, tongue movement, blinking or eye movement);
  • trouble speaking or swallowing;
  • swelling in your hands or feet;
  • confusion, unusual thoughts or behavior, hallucinations, or thoughts about hurting yourself;
  • sudden weakness or ill feeling, fever, chills, sore throat, swollen gums, painful mouth sores, pain when swallowing, skin sores, cold or flu symptoms, cough;
  • signs of dehydration --feeling very thirsty or hot, being unable to urinate, heavy sweating, or hot and dry skin;
  • liver problems --upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • high blood sugar --increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision, weight loss; or
  • severe nervous system reaction --very stiff (rigid) muscles, high fever, sweating, confusion, fast or uneven heartbeats, tremors, feeling like you might pass out.

Common side effects may include:

  • weight gain (more likely in teenagers), increased appetite;
  • headache, dizziness, drowsiness, feeling tired or restless;
  • problems with speech or memory;
  • tremors or shaking, numbness or tingly feeling;
  • changes in personality;
  • dry mouth, or increased salivation;
  • stomach pain, constipation; or
  • pain in your arms or legs.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect olanzapine?

Taking this medicine with other drugs that make you sleepy can worsen this effect. Ask your doctor before taking olanzapine with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.

Other drugs may interact with olanzapine, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.

Where can I get more information?

Your pharmacist can provide more information about olanzapine.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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