What is Haldol: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Haldol overview

BRAND NAMES:

  • Haldol, Haldol Decanoate, Haloperidol Decanoate Novaplus

Generic Names:

  • Haloperidol Lactate

Uses:

  • Treats schizophrenia and symptoms of Tourette syndrome.

Therapeutic Classes:

  • Antipsychotic

Forms:

  • Injectable

How it’s taken:

  • By injection

What is Haldol used for?

Haldol is used to treat mood disorders including schizophrenia and schizoaffective disorders. It works by helping you to think more clearly and feel less nervous. Haldol is also used to treat uncontrolled movements and outbursts of words caused by Tourette's disorder.

What form(s) does Haldol come in

  • Injectable

What are common Haldol doses?

  • Ampule 1ML of 5MG/ML

How to take Haldol

  • Injection routeA nurse or other health provider will give you this medicine.

  • Injection routeYour doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.

  • Injection routeYour doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.

  • Injection routeA nurse or other health provider will give you this medicine.

What to do if you miss a dose of Haldol

Haldol contraindications

  • This medicine is not right for everyone. You should not receive it if you had an allergic reaction to haloperidol, or if you have Parkinson disease.

Haldol warnings

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Twitching or muscle movements you cannot control, problems with balance or walking

  • Tell your doctor if you are pregnant, or if you have kidney disease, liver disease, bone marrow problems, heart or blood vessel disease, heart rhythm problems (including long QT syndrome), allergies, thyroid problems, or a history of breast cancer or seizures.

  • Do not breastfeed while you are using this medicine.

  • This medicine may cause the following problems:Heart rhythm changesTardive dyskinesia (a muscle disorder that could become permanent)Neuroleptic malignant syndrome (a nerve disorder that could be life-threatening)Bronchitis or pneumoniaExtrapyramidal reaction (a muscle and nerve disorder)

  • This medicine may make you dizzy or drowsy, or may cause trouble with thinking or controlling body movements, which may lead to falls, fractures, or other injuries. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.

  • Do not stop receiving Haldol® suddenly without asking your doctor. You may need to slowly decrease your dose before stopping it completely.

  • This medicine may make you bleed, bruise, or get infections more easily. Take precautions to prevent illness and injury. Wash your hands often.

  • Unusual bleeding, bruising, or weakness

Haldol interactions

  • Some medicines can affect how haloperidol works. Tell your doctor if you are using any of the following:Alprazolam, buspirone, carbidopa/levodopa, chlorpromazine, desipramine, fluoxetine, fluvoxamine, imipramine, itraconazole, ketoconazole, lithium, nefazodone, paroxetine, promethazine, quinidine, rifampin, sertraline, venlafaxineBlood thinner (including phenindione, warfarin)Medicine for heart rhythm problemsMedicine for seizures (including carbamazepine)

  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

  • Do not drink alcohol while you are using this medicine.

  • Do not drink alcohol while you are using this medicine.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

Haldol side effects

Serious Side Effects

  • Jerky muscle movement you cannot control (often in your face, tongue, or jaw)

  • Sweating, confusion, muscle stiffness

  • Fever, cough, trouble breathing

  • Fast, slow, or uneven heartbeat

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Muscle spasms, trouble swallowing

  • Unusual bleeding, bruising, or weakness

  • Twitching or muscle movements you cannot control, problems with balance or walking

  • Lightheadedness, dizziness, fainting

Less Serious Side Effects

  • Drowsiness

  • Breast pain or swelling

  • Dry mouth

  • Pain, swelling, or redness where the shot was given

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