Medications


Haloperidol long-acting injection

What is this medicine?

HALOPERIDOL (ha loe PER i dole) helps to treat schizophrenia. It can help you to keep in touch with reality and reduce your mental problems.

How should I use this medicine?

This medicine is for injection into a muscle. It is given by a health care professional in a hospital or clinic setting.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

  • breast pain or swelling or unusual production of breast milk

  • breathing problems

  • chest pain

  • confusion

  • fast, irregular, pounding heartbeat

  • feeling faint or lightheaded, falls

  • fever, chills, or sore throat

  • hot, dry skin or lack of sweating

  • problems with balance, talking, walking

  • seizures

  • stiffness, spasms, trembling

  • trouble passing urine or change in the amount of urine

  • uncontrollable head, mouth, neck, arm, or leg movements

  • unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • anxiety or agitation

  • change in sex drive or performance

  • constipation or diarrhea

  • menstrual changes

  • nausea or vomiting

  • weight gain

What may interact with this medicine?

Do not take this medicine with any of the following medications:

  • arsenic trioxide

  • certain antibiotics like grepafloxacin, pentamidine, sparfloxacin

  • certain medicines for fungal infections like fluconazole, itraconazole, ketoconazole, posaconazole, voriconazole

  • certain medicines for irregular heart beat like dofetilide, dronedarone

  • certain medicines for malaria like chloroquine, halofantrine

  • cisapride

  • droperidol

  • levomethadyl

  • methadone

  • pimozide

  • ranolazine

  • risperidone

  • thioridazine

  • ziprasidone

This medicine may also interact with the following medications:

  • alcohol

  • atropine

  • benztropine

  • cabergoline

  • carbamazepine

  • certain medicines for depression, anxiety, or psychotic disturbances

  • certain medicines for Parkinson's disease like levodopa

  • certain medicines that treat or prevent blood clots like warfarin

  • dicyclomine

  • lithium

  • narcotic medicines for pain

  • other medicines that prolong the QT interval (cause an abnormal heart rhythm)

  • promethazine

  • rifampin

What if I miss a dose?

It is important not to miss your dose. Call your doctor or health care professional if you are unable to keep an appointment.

Where should I keep my medicine?

This drug is given in a hospital or clinic and will not be stored at home.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • dementia

  • head injury

  • heart disease

  • irregular heartbeat

  • low or high levels of electrolytes in the blood

  • lung disease

  • Parkinson's disease

  • thyroid disease

  • an unusual or allergic reaction to haloperidol, tartrazine, other medicines, foods, dyes, or preservatives

  • pregnant or trying to get pregnant

  • breast-feeding

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular checks on your progress. It may be a few weeks before you see the full effects of this medicine.

You may get dizzy or drowsy or have blurred vision. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol can increase dizziness and drowsiness. Avoid alcoholic drinks.

Do not treat yourself for colds, diarrhea or allergies. Ask your doctor or health care professional for advice, some nonprescription medicines may increase possible side effects.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.

This medicine can reduce the response of your body to heat or cold. Dress warm in cold weather and stay hydrated in hot weather. If possible, avoid extreme temperatures like saunas, hot tubs, very hot or cold showers, or activities that can cause dehydration such as vigorous exercise.

This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.


NOTE:This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider. Copyright© 2017 Elsevier
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