What is Haloperidol?

haloperidol is generally prescribed in the treatment of schizophrenia, but also finds use in the control of symptoms associated with Tourette’s syndrome.

What is Haloperidol?

Haloperidol is an antipsychotic whose exact mechanism of functioning is unknown. However, it is believed to work by blocking the activity of certain molecules in the brain.

How is Haloperidol taken?

Haloperidol is administered orally (in the form of tablets or concentrated solution) or by injections.

Side effects of haloperidol

Haloperidol can cause neuroleptic malignant syndrome or reduce the immune system and can increase the sensitivity of the skin to sunlight and – in case of overheating – the risk of heat stroke.
Other possible side effects of the drug include:

  • constipation
  • discharge of diarrhea
  • dizziness
  • drowsiness
  • dry mouth
  • headache
  • decrease or loss of appetite
  • feeling sick
  • state of restlessness
  • stomach discomfort
  • insomnia

It is good to go to a doctor immediately in case of:

  • difficulty breathing
  • feeling of heaviness or tightness in the chest
  • swelling of the mouth, face, lips or tongue
  • visual problems or dips
  • chest pain
  • confusional state
  • skin rash
  • urticaria
  • itch
  • dark urine
  • difficult or reduced urination
  • complications in the sexual sphere
  • dehydration
  • difficulty speaking or swallowing
  • slime
  • breast volume increased
  • excessive sweating
  • fainting
  • irregular or fast heartbeat
  • chills, fever or persistent sore throat
  • hallucination states
  • mood swings or behavior changes
  • menstrual irregularities
  • nipple discharge
  • prolonged and painful erections
  • muscle stiffness
  • dizziness, headache or vomiting (severe or persistent)
  • shortness of breath or cough
  • uncontrolled muscle movements
  • jaundice
  • if you walk by dragging your foot


The intake of haloperidol is contraindicated if you are dehydrated, if you are often exposed to high temperatures and if you drink alcohol. Alcohol can also aggravate drowsiness and cause the drug to impair the ability to drive or maneuver dangerous machinery. This side effect can also be aggravated by taking other medicines at the same time.
Before starting treatment it is important to make the doctor aware:

  • about the presence of any allergies to the active substance, to its excipients or to any other drug or food;
  • the use of other medicines, herbal medicines and supplements that are being taken or already taken in the past (in particular astemizole, dofetilide, dronedarone, milotinib, propafenone, sodium oxybate, terfenadine, tetrabenazine, antiarrhythmics, antipsychotics, arsenic, bepridil, chloroquine , cispride, dolasetron, domperidone, droperidol, rifampicin, anticoagulants, narcotics and, in general, drugs that increase the risk of irregular heartbeat or electrolyte imbalances, halofantrine, ketolides, kinase inhibitors, macrolides, maprotiline, methadone, fenotiaziazia , quinolones, lithium, tramadol, anticholinergics, carbamazepine, azole antifungals);
  • if you suffer (or have previously suffered) from Parkinson’s, diabetes, depression, Alzheimer’s, convulsions, electroencephalogram abnormalities, thyroid problems, neuroleptic malignant syndrome, high prolactin levels in the blood, low levels of neutrophils or other white blood cells, porphyria, high or low blood pressure, electrolyte imbalances, dementia, tumors and if you are at risk of breast cancer;
  • in the case of pregnant women or breastfeeding women.

It is also advisable to inform dentists, doctors and surgeons about taking Haloperidol.

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