Adult Medication

Brand Names: Canada

Methoprazine; Novo-Meprazine; Nozinan; PMS-Methotrimeprazine


  • There is a higher chance of death in older adults who take this drug for mental problems caused by dementia. Most of the deaths were linked to heart disease or infection. This drug is not approved to treat mental problems caused by dementia.

What is this drug used for?

  • It is used to treat schizophrenia.
  • It is used to treat mood problems.
  • It is used to ease pain.
  • It is used to treat problems with how one acts.
  • It is used to treat sleep problems.
  • It is used to treat upset stomach and throwing up.

What do I need to tell my doctor BEFORE I take this drug?

  • If you have an allergy to methotrimeprazine, phenothiazines, or any other part of this drug.
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you have any of these health problems: Blood problems or liver disease.
  • If you have any of these health problems: Brain damage, heart or blood vessel problems, low blood pressure, slow breathing, or a weak pulse.
  • If you are very sleepy.
  • If you have an adrenal gland tumor called pheochromocytoma.
  • If you have kidney disease.
  • If you have recently drunk a lot of alcohol or taken a big amount of drugs that may slow your actions like phenobarbital or some pain drugs like oxycodone.
  • You will be getting anesthesia.
This is not a list of all drugs or health problems that interact with this drug.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take this drug?

  • Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
  • Avoid driving and doing other tasks or actions that call for you to be alert until you see how this drug affects you.
  • To lower the chance of feeling dizzy or passing out, rise slowly over a few minutes when sitting or lying down. Be careful climbing stairs.
  • Avoid drinking alcohol while taking this drug.
  • Talk with your doctor before you use other drugs and natural products that slow your actions.
  • You may get sunburned more easily. Avoid sun, sunlamps, and tanning beds. Use sunscreen and wear clothing and eyewear that protects you from the sun.
  • If you have seizures or are on seizure drugs, talk with your doctor.
  • This drug may cause the results of some pregnancy tests to be wrong. Talk with the doctor.
  • Blood clots have happened with this drug. Sometimes, these blood clots have been deadly. Talk with the doctor.
  • If you are around certain insecticides and pesticides, you may have more side effects. If you are around insecticides and pesticides, be sure to wear a breathing mask, and wash and change your clothes often. Talk with your doctor.
  • Call your doctor right away if you have a painful erection (hard penis) or an erection that lasts for longer than 4 hours. This may happen even when you are not having sex. If this is not treated right away, it may lead to lasting sex problems and you may not be able to have sex.
  • Older adults with dementia taking drugs like this one have had a higher number of strokes. Sometimes these strokes have been deadly. This drug is not approved to treat mental problems caused by dementia. Talk with your doctor.
  • Some people who take this drug may get a very bad muscle problem called tardive dyskinesia. The risk may be greater in older adults, mainly women. The chance that this will happen or that it will never go away is greater in people who take this drug in higher doses or for a long time. Muscle problems may also occur after short-term use with low doses. Call your doctor right away if you have trouble controlling body movements or if you have muscle problems with your tongue, face, mouth, or jaw like tongue sticking out, puffing cheeks, mouth puckering, or chewing.
  • If you are 65 or older, use this drug with care. You could have more side effects.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.
  • Taking this drug in the third trimester of pregnancy may lead to muscle movements that cannot be controlled and withdrawal in the newborn. Talk with the doctor.
  • Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Signs of high blood sugar like confusion, feeling sleepy, more thirst, more hungry, passing urine more often, flushing, fast breathing, or breath that smells like fruit.
  • Signs of infection like fever, chills, very bad sore throat, ear or sinus pain, cough, more sputum or change in color of sputum, pain with passing urine, mouth sores, or wound that will not heal.
  • Signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
  • Trouble controlling body movements, twitching, change in balance, trouble swallowing or speaking.
  • Swelling, warmth, numbness, change of color, or pain in a leg or arm.
  • Chest pain or pressure or a fast heartbeat.
  • Shortness of breath.
  • Coughing up blood.
  • Drooling.
  • A heartbeat that does not feel normal.
  • Enlarged breasts.
  • Nipple discharge.
  • Period (menstrual) changes.
  • Restlessness.
  • Change in eyesight, eye pain, or very bad eye irritation.
  • Trouble passing urine.
  • Very bad dizziness or passing out.
  • Feeling confused.
  • Shakiness, trouble moving around, or stiffness.
  • Very upset stomach or throwing up.
  • Hard stools (constipation).
  • Feeling very tired or weak.
  • Not able to control bladder.
  • Lowered interest in sex.
  • Seizures.
  • Very bad headache.
  • Not sweating during activities or in warm temperatures.
  • Fast breathing.
  • Anxiety.
  • A very bad and sometimes deadly health problem called neuroleptic malignant syndrome (NMS) may happen. Call your doctor right away if you have any fever, muscle cramps or stiffness, dizziness, very bad headache, confusion, change in thinking, fast heartbeat, heartbeat that does not feel normal, or are sweating a lot.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
  • Feeling sleepy.
  • Headache.
  • Upset stomach or throwing up.
  • Dry mouth.
  • Weight gain.
  • Stuffy nose.
  • Sweating a lot.
  • Dizziness.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.

How is this drug best taken?

Use this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely.


  • Take with or without food. Take with food if it causes an upset stomach.
  • Do not stop taking this drug all of a sudden without calling your doctor. You may have a greater risk of signs of withdrawal. If you need to stop this drug, you will want to slowly stop it as ordered by your doctor.


  • It is given as a shot into a muscle or vein.
  • If you have been taking this drug on a regular basis and you stop it all of a sudden, you may have signs of withdrawal. Do not stop taking this drug all of a sudden without calling your doctor. Tell your doctor if you have any bad effects.

All products:

  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • If you have high blood sugar (diabetes), talk with your doctor. This drug may raise blood sugar.
  • Check your blood sugar as you have been told by your doctor.
  • Be careful in hot weather or while being active. Drink lots of fluids to stop fluid loss.
  • This drug may cause weight gain. You may need to have your weight checked often.

What do I do if I miss a dose?


  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.


  • Call your doctor to find out what to do.

How do I store and/or throw out this drug?


  • Store at room temperature.
  • Protect from light.
  • Store in a dry place. Do not store in a bathroom.


  • If you need to store this drug at home, talk with your doctor, nurse, or pharmacist about how to store it.

All products:

  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

General drug facts

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else’s drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. 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 the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Last Reviewed Date



© 2016 Wolters Kluwer Clinical Drug Information, Inc. and its affiliates and/or licensors. All rights reserved.