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Zyprexa Intramuscular

Generic Name: olanzapine (oh-LAN-za-peen)
Brand Name: Zyprexa Intramuscular

Zyprexa Intramuscular is an antipsychotic. It may increase the risk of death when used to treat mental problems caused by dementia in elderly patients. Most of the deaths were linked to heart problems or infection. Zyprexa Intramuscular is not approved to treat mental problems caused by dementia.

Zyprexa Intramuscular is not approved for use in all children. If Zyprexa Intramuscular is prescribed for your child, talk with the doctor to be sure that Zyprexa Intramuscular is right for your child.


Zyprexa Intramuscular is used for:

Short-term treatment of agitation caused by schizophrenia or bipolar disorder. It may also be used for other conditions as determined by your doctor.

Zyprexa Intramuscular is an atypical antipsychotic. Exactly how it works is not known. It is thought to affect certain substances in the brain.

Do NOT use Zyprexa Intramuscular if:

  • you are allergic to any ingredient in Zyprexa Intramuscular

Contact your doctor or health care provider right away if any of these apply to you.

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Before using Zyprexa Intramuscular:

Some medical conditions may interact with Zyprexa Intramuscular. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances
  • if you have a history of seizures, heart problems (eg, fast, slow, or irregular heartbeat; heart failure), an abnormal electrocardiogram (ECG), a heart attack, a stroke or "mini-stroke," blood vessel problems, high blood cholesterol levels, high or low blood pressure, or low white blood cell levels
  • if you have a history of liver problems, stomach or bowel problems (eg, decreased muscle movement), enlarged prostate, narrow-angle glaucoma, neuroleptic malignant syndrome (NMS), aspiration pneumonia, or suicidal thoughts or attempts
  • if you have Alzheimer disease, bowel blockage, dementia, or trouble swallowing
  • if you have diabetes or are very overweight, or if a family member has had diabetes
  • if you have had high blood prolactin levels or a history of certain types of cancer (eg, breast, pancreas, pituitary), or if you are at risk of breast cancer
  • if you are dehydrated or have low blood volume, drink alcohol, smoke, or you will be exposed to high temperatures

Some MEDICINES MAY INTERACT with Zyprexa Intramuscular. Tell your health care provider if you are taking any other medicines, especially any of the following:

  • Tramadol because the risk of seizures may be increased
  • Alpha-blockers (eg, doxazosin), diazepam, or medicine for high blood pressure because the risk of low blood pressure and fainting may be increased
  • Anticholinergics (eg, scopolamine), benzodiazepines (eg, lorazepam), or fluvoxamine because they may increase the risk of Zyprexa Intramuscular's side effects
  • Carbamazepine, HIV protease inhibitors (eg, ritonavir), omeprazole, or rifampin because they may decrease Zyprexa Intramuscular's effectiveness
  • Dopamine receptor agonists (eg, pramipexole) or levodopa because their effectiveness may be decreased by Zyprexa Intramuscular

This may not be a complete list of all interactions that may occur. Ask your health care provider if Zyprexa Intramuscular may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Zyprexa Intramuscular:

Use Zyprexa Intramuscular as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Zyprexa Intramuscular is usually given as an injection at your doctor's office, hospital, or clinic. If you will be using Zyprexa Intramuscular at home, a health care provider will teach you how to use it. Be sure you understand how to use Zyprexa Intramuscular. Follow the procedures you are taught when you use a dose. Contact your health care provider if you have any questions.
  • Do not use Zyprexa Intramuscular if it contains particles, is cloudy or discolored, or if the vial is cracked or damaged.
  • If you miss a dose of Zyprexa Intramuscular, contact your doctor right away.

Ask your health care provider any questions you may have about how to use Zyprexa Intramuscular.

Important safety information:

  • Zyprexa Intramuscular may cause dizziness, drowsiness, or decreased vision. These effects may be worse if you take it with alcohol or certain medicines. Use Zyprexa Intramuscular with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
  • Do not drink alcohol while you are using Zyprexa Intramuscular.
  • Talk with your doctor before you use medicines that may cause drowsiness (eg, sleep aids, muscle relaxers) while you are using Zyprexa Intramuscular; it may add to their effects. Ask your pharmacist if you have questions about which medicines may cause drowsiness.
  • Zyprexa Intramuscular may cause dizziness, lightheadedness, or fainting; alcohol, hot weather, exercise, or fever may increase these effects. To prevent them, sit up or stand slowly, especially in the morning. Sit or lie down at the first sign of any of these effects. Tell your doctor or other health care provider if these effects occur.
  • Do not become overheated or dehydrated in hot weather or while you are being active; heatstroke may occur.
  • If vomiting or diarrhea occurs, you will need to take care not to become dehydrated. Contact your doctor for instructions. Contact your doctor right away if you think you may be dehydrated.
  • Zyprexa Intramuscular may raise your blood sugar. High blood sugar may make you feel confused, drowsy, or thirsty. It can also make you flush, breathe faster, or have a fruit-like breath odor. If these symptoms occur, tell your doctor right away.
  • Zyprexa Intramuscular may lower the ability of your body to fight infection. Avoid contact with people who have colds or infections. Tell your doctor if you notice signs of infection like fever, sore throat, rash, or chills.
  • NMS is a possibly fatal syndrome that can be caused by Zyprexa Intramuscular. Symptoms may include fever; stiff muscles; confusion; abnormal thinking; fast or irregular heartbeat; and sweating. Contact your doctor at once if you have any of these symptoms.
  • Some patients who take Zyprexa Intramuscular may develop muscle movements that they cannot control. This is more likely to happen in elderly patients, especially women. The chance that this will happen or that it will become permanent is greater in those who take Zyprexa Intramuscular in higher doses or for a long time. Muscle problems may also occur after short-term treatment with low doses. Tell your doctor at once if you have muscle problems with your arms; legs; or your tongue, face, mouth, or jaw (eg, chewing movements, mouth puckering, puffing of cheeks, tongue sticking out) while taking Zyprexa Intramuscular.
  • Some patients have experienced weight gain while using Zyprexa Intramuscular. You may need to have regular weight checks while you use Zyprexa Intramuscular.
  • Lab tests, including fasting blood glucose, cholesterol, complete blood cell counts, and liver function, may be performed while you use Zyprexa Intramuscular. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.
  • Use Zyprexa Intramuscular with caution in the ELDERLY; they may be more sensitive to its effects.
  • Caution is advised when using Zyprexa Intramuscular in CHILDREN; they may be more sensitive to its effects, especially drowsiness, increased cholesterol and lipid levels, increased levels of prolactin (a hormone), and weight gain. Children may need regular weight checks while they take Zyprexa Intramuscular.
  • PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Zyprexa Intramuscular while you are pregnant. Using Zyprexa Intramuscular during the third trimester may result in uncontrolled muscle movements or withdrawal symptoms in the newborn. Discuss any questions or concerns with your doctor. Zyprexa Intramuscular is found in breast milk. Do not breast-feed while using Zyprexa Intramuscular.

Possible side effects of Zyprexa Intramuscular:

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; dizziness; drowsiness; dry mouth; lightheadedness; pain, redness, or swelling at the injection site; weakness; weight gain.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); abnormal thoughts; chest pain; confusion; decreased urination; fainting; fast, slow, or irregular heartbeat; fever, chills, or persistent sore throat; increased saliva production or drooling; increased sweating; memory loss; menstrual changes; muscle pain, weakness, or stiffness; new or worsening mental or mood changes (eg, depression, hallucinations); one-sided weakness; seizures; severe or prolonged dizziness or headache; shortness of breath; suicidal thoughts or actions; swelling of the hands, legs, or feet; symptoms of high blood sugar (eg, increased thirst, hunger, or urination; unusual weakness); symptoms of high prolactin levels (eg, enlarged breast size, decreased sexual ability, missed menstrual period, nipple discharge); tremor; trouble concentrating, speaking, or swallowing; trouble sitting still; trouble walking or standing; uncontrolled muscle movements (eg, arm or leg movements, twitching of the face or tongue, jerking or twisting); unusual bruising; vision changes; yellowing of the skin or eyes.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include abnormal thinking; aggression; agitation; chest pain; coma; confusion; difficult or slurred speech; fainting; fast or irregular heartbeat; fever; mental or mood changes; seizure; severe drowsiness, dizziness, or weakness; severe or persistent headache; slow or shallow breathing; stiff muscles; sweating; uncontrolled muscle movements.

Proper storage of Zyprexa Intramuscular:

Zyprexa Intramuscular is usually handled and stored by a health care provider. If you are using Zyprexa Intramuscular at home, store Zyprexa Intramuscular as directed by your pharmacist or health care provider. Keep Zyprexa Intramuscular out of the reach of children and away from pets.

General information:

  • If you have any questions about Zyprexa Intramuscular, please talk with your doctor, pharmacist, or other health care provider.
  • Zyprexa Intramuscular is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.
  • Check with your pharmacist about how to dispose of unused medicine.

This information should not be used to decide whether or not to take Zyprexa Intramuscular or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about Zyprexa Intramuscular. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Zyprexa Intramuscular. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using Zyprexa Intramuscular.

Issue Date: July 2, 2014
Database Edition 14.3.1.001
Copyright © 2014 Wolters Kluwer Health, Inc.

Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.

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