The following psychotic (neuroleptic) conditions are treated with this drug:

  •       Schizophrenia
  •       Motor and vocal tics associated with Tourette’s syndrome  

IUPAC name: 4-[4-(4-chlorophenyl)-4-hydroxy piperidin-1-yl]-1-(4-fluorophenyl)butan-1-one

Drug class: Typical antipsychotics; Butyrophenones

Route of administration: oral, intramuscular, intravenous

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Is it a drug that needs a prescription? YES

Is it an OTC drug? NO

Mechanism of action

This medication works by inhibiting the activity of a neurotransmitter (dopamine) in the brain and helps to enhance thoughts, feelings, moods, and behavior.

Side effects

It may cause dizziness, drowsiness, headache, nausea, vomiting, sleep issues, salivation, agitation, dry mouth, tremors, postural hypotension, restlessness, and trouble urinating.


Before using this medication, take the following precautions and notify your doctor:

If you are allergic to it or to other antipsychotic (neuroleptic) drugs, or if you have any other allergies,

If you are taking any other medication (prescribed, non-prescribed, or herbal products),

If you have a history of Parkinson’s disease, bipolar disorder, cardiac disease ( heart attack, angina, congestive heart failure, arrhythmia), glaucoma, seizures (fits), hyperthyroidism, leukemia (low blood cell count), hypotension (low blood pressure),

If you have undergone any type of surgery,

Haloperidol may increase the risk of QT prolongation if you have certain cardiac diseases (bradycardia, heart failure, or QT prolongation).

 If you have low blood levels of magnesium, potassium, or sodium, you may be more likely to experience QT prolongation (extended intervals between cardiac contraction and relaxation) when taking this medication.

 Limit your alcohol usage since it increases your chances of developing blurred vision, dizziness, or drowsiness. It may also cause a loss of alertness.

This drug’s adverse effects are more severe in older adults with dementia.

This drug’s adverse effects are more severe in children.

Consult your doctor if you are pregnant or breastfeeding.

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