How does this medication work? What will it do for me?

Aripiprazole injection belongs to the group of medications known as antipsychotics. It is used to treat adults with schizophrenia. Aripiprazole does not cure schizophrenia, but helps to manage symptoms by affecting the actions of certain chemical messengers in the brain.

This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of this medication may not be used for all of the conditions discussed here.

Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.

Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.

What form(s) does this medication come in?

300 mg
Each vial contains aripiprazole 300 mg as a lyophilized powder for reconstitution. Nonmedicinal ingredients: carboxymethyl-cellulose-sodium, mannitol, sodium phosphate monobasic monohydrate, and sodium hydroxide. Diluent contains: sterile water for injection.

400 mg
Each vial contains aripiprazole 400 mg as a lyophilized powder for reconstitution. Nonmedicinal ingredients: carboxymethyl-cellulose-sodium, mannitol, sodium phosphate monobasic monohydrate, and sodium hydroxide. Diluent contains: sterile water for injection.

How should I use this medication?

This medication is given as an intramuscular (into the muscle) injection at your doctor's office or clinic once a month. The usual monthly dose is 400 mg. Your doctor may adjust this dose depending on how well you tolerate the medication. After the first injection of aripiprazole, you will need to continue taking aripiprazole tablets (or another oral antipsychotic) by mouth for 14 days until the aripiprazole injection has reached the right concentration in your body. 

Many things can affect the dose of a medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.

It is important this medication be given exactly as recommended by your doctor. If you miss an appointment to receive aripiprazole injection, contact your doctor as soon as possible to reschedule your appointment.

Store this medication at room temperature and keep it out of the reach of children.

Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.

Who should NOT take this medication?

Do not take this medication if you are allergic to aripiprazole or any ingredients of the medication.

What side effects are possible with this medication?

Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes this medication. If you are concerned about side effects, discuss the risks and benefits of this medication with your doctor.

The following side effects have been reported by at least 1% of people taking this medication. Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

  • anxiety
  • constipation
  • diarrhea
  • dizziness
  • drowsiness
  • extrapyramidal symptoms (abnormal body movements, restlessness, shaking, or stiffness)
  • headache
  • heartburn or indigestion
  • lightheadedness
  • nausea
  • pain at the injection site
  • restlessness
  • skin rash (on its own)
  • tremors
  • trouble sleeping
  • vomiting
  • weight gain

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

  • difficulty swallowing
  • dizziness when rising from a sitting or lying position
  • muscle twitching or abnormal movements of the face or tongue
  • signs of a blood clot in blood vessels, such as chest pain, abnormal heart rhythm, pain and swelling in one leg muscle
  • symptoms of an infection (e.g., sore throat, fever, chills, cough)
  • symptoms of high blood sugar (excessive thirst or hunger, excessive urination, weight loss, tiredness)

Stop taking the medication and seek immediate medical attention if any of the following occur:

  • long-lasting (greater than 4 hours) and painful erection of the penis
  • seizures
  • signs of stroke (e.g., sudden weakness or numbness of the face, arms, or legs and speech or vision problems)
  • symptoms of a severe allergic reaction (hives; difficulty breathing; difficulty swallowing; swelling of the face, mouth, throat, or tongue)
  • very stiff muscles with high fever, rapid or irregular heartbeat, sweating, confusion, or reduced consciousness

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication.

Are there any other precautions or warnings for this medication?

Before you begin taking a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should take this medication.


November 2, 2015

Health Canada has issued new restrictions concerning the use of Abilify and Abilify Maintena (aripiprazole). To read the full Health Canada Advisory, visit Health Canada's web site at

Abnormal heart rhythms: This medication can cause an abnormal heart rhythm problem called QT prolongation. If you have a history of QT prolongation, slow or irregular heartbeat, irregular heart rhythm, heart failure, heart attack, heart disease, are taking other medications known to cause QT prolongation, or have a family history of sudden cardiac death at less than 50 years of age, discuss with your doctor how this medication may affect your medical condition, or how your medical condition may affect the dosing and effectiveness of this medication. Your doctor will perform tests at regular intervals to monitor for any changes in your heart rhythm.

Body temperature: Aripiprazole, like other antipsychotic medications, may interfere with your body's ability to regulate body temperature. People who exercise vigorously, who are exposed to extreme heat, are dehydrated, or are taking anticholinergic medications (e.g., benztropine, oxybutynin) are more at risk. Contact your doctor as soon as possible if you feel very hot and are unable to cool down.

Take care to avoid overheating during strenuous exercise or in hot temperatures, and avoid becoming dehydrated by drinking enough fluids.

Diabetes: Aripiprazole may increase blood sugar for people with diabetes or those who are at risk for diabetes. If you have diabetes, monitor your blood sugar frequently as recommended by your doctor. If you experience symptoms of high blood sugar (e.g., increased urination, increased thirst, increased eating, and weakness) while taking this medication, contact your doctor.

Drowsiness/reduced alertness: Aripiprazole may cause drowsiness or lightheadedness, which could interfere with your ability to do activities requiring alertness, such as driving a car. Avoid these activities if the medication affects you in this way. Avoid alcohol while taking aripiprazole as it may increase your drowsiness.

Low blood pressure: Some people taking aripiprazole may experience sudden blood pressure drops when getting up from a sitting or lying position. These blood pressure drops could lead to dizziness, lightheadedness, and falls. If you experience this problem, try getting up more slowly. If it persists or if you faint, contact your doctor.

If you have or have had heart disease, stroke, "mini-stroke", or are at risk of experiencing low blood pressure (e.g., dehydration, taking medications for high blood pressure), discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.

Neuroleptic malignant syndrome (NMS): This medication may cause a potentially fatal reaction called neuroleptic malignant syndrome (NMS). If you develop symptoms of NMS, such as muscle stiffness, fever, confusion, sweating, or irregular heartbeat, stop taking this medication and seek immediate medical attention.

Seizures: Seizures have occurred in people taking aripiprazole. If you have a history of seizures, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. If you experience a seizure while taking this medication, get immediate medical attention.

Suicidal or agitated behaviour: People taking this medication may feel agitated (restless, anxious, aggressive, emotional, and feeling not like themselves), or they may want to hurt themselves or others. These symptoms may occur within several weeks after starting this medication. If you experience these side effects or notice them in a family member who is taking this medication, contact your doctor immediately. You should be closely monitored by your doctor for emotional and behaviour changes while taking this medication.

Swallowing problems: People taking aripiprazole may have difficulty swallowing. People taking this or other antipsychotic medications should be closely monitored by their doctor for swallowing problems while they are using this medication. If you experience difficulty swallowing while taking this medication, contact your doctor.

Tardive dyskinesia: People taking this medication may develop tardive dyskinesia, a syndrome of uncontrolled body movements. This syndrome may be irreversible. If you develop uncontrolled or unusual body movements, contact your doctor as soon as possible.

Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.

Breast-feeding: This medication passes into breast milk. If you are a breast-feeding mother and are taking aripiprazole, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of ariprazole injection have not been established for children less than 18 years of age.

Seniors: Seniors taking this medication for dementia-related psychosis have a higher risk of strokes and death compared to seniors who are not taking the medication. Aripiprazole is not approved or recommended for seniors for this purpose.

What other drugs could interact with this medication?

There may be an interaction between aripiprazole and any of the following:

  • abiraterone
  • acebutolol
  • alcohol
  • amantadine
  • amiodarone
  • amphetamines (e.g., dextroamphetamine, methylphenidate)
  • anagrelide
  • antiemetics (e.g., granisetron, ondansetron)
  • aprepitant
  • atomoxetine
  • azelastine
  • "azole" antifungals (e.g., fluconazole, ketoconazole, voriconazole)
  • bicalutamide
  • betaxolol
  • boceprevir
  • bosentan
  • bromocriptine
  • buprenorphine
  • bupropion
  • calcitriol
  • carbamazepine
  • celecoxib
  • cholecalciferol
  • chloroquine
  • cisapride
  • conivaptan
  • cyclobenzaprine
  • cyclosporine
  • cyproterone
  • darifenacin
  • deferasirox
  • desvenlafaxine
  • dexamethasone
  • dextromethorphan
  • dihydroergotamine
  • disopyramide
  • domperidone
  • donepezil
  • dosulepin
  • droperidol
  • entacapone
  • enzalutamide
  • ergonovine
  • estrogens
  • flecanide
  • gabapentin
  • galantamine
  • HIV non-nucleoside reverse transcriptase inhibitors (e.g., delaviridine, efavirenz, etravirine, nevirapine)
  • HIV protease inhibitors (e.g., atazanavir, indinavir, ritonavir, saquinavir)
  • isoniazid
  • levodopa
  • lithium
  • macrolide antibiotics (e.g., azithromycin, clarithromycin, erythromycin)
  • MAO inhibitors (e.g., moclobemide, selegiline, tranylcypromine, phenelzine)
  • medications used to treat high blood pressure (e.g., acebutolol, diltiazem, irbesartan)
  • medroxyprogesterone
  • mefloquine
  • meperidine
  • methadone
  • methylphenidate
  • metoclopramide
  • metronidazole
  • mifepristone
  • modafinil
  • nefazodone
  • other medications that cause drowsiness, such as:
    • alcohol
    • antianxiety medications (e.g., lorazepam, diazepam)
    • antihistamines (e.g., diphenhydramine, doxylamine, hydroxyzine)
    • antipsychotic medications (e.g., chlorpromazine, haloperidol, olanzepine, quetiapine, risperidone)
    • general anesthetics (medications used to put people to sleep before surgery)
    • narcotics (e.g., codeine, morphine, oxycodone)
    • seizure medications (e.g., clobazam, ethosuximide, felbamate, levetiracetam, phenobarbital, phenytoin, primidone, topiramate, valproic acid, zonisamide)
    • sedatives (zopiclone, zolpidem)
    • tricyclic antidepressants (e.g., amitriptyline, imipramine)
  • oxybutynin
  • peginterferon alfa
  • pioglitazone
  • pramipexole
  • primaquine
  • prednisone
  • procainamide
  • proton pump inhibitors (PPIs; e.g., lansoprazole, omeprazole)
  • quinine
  • quinidine
  • quinolone antibiotics (e.g., ciprofloxacin, norfloxacin, ofloxacin)
  • ranitidine
  • rifabutin
  • rifampin
  • rivastigmine
  • ropinirole
  • saquinavir
  • selective serotonin reuptake inhibitors (SSRIs; e.g., citalopram, duloxetine, fluoxetine, paroxetine, sertraline)
  • serotonin antagonists (e.g. granisetron, ondansetron)
  • simeprevir
  • "statin" anti-cholesterol medications (e.g., atorvastatin, simvastatin)
  • sotalol
  • St. John's wort
  • sulfinpyrazone
  • tacrolimus
  • tamoxifen
  • telaprevir
  • tetracycline
  • ticagrelor
  • ticlopidine
  • tolcapone
  • terbinafine
  • tramadol
  • trazodone
  • "triptan" migraine medications (e.g., naratriptan, sumatriptan)
  • tryptophan
  • tyrosine kinase inhibitors (e.g., dasatinib, imatinib, nilotinib, sunitinib)
  • venlafaxine
  • yohimbine
  • zafirlukast

If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:

  • stop taking one of the medications,
  • change one of the medications to another,
  • change how you are taking one or both of the medications, or
  • leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with this medication. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.