Chlorpromazine

Pronounced klor-PRO-mah-zeen

Brand names: Thorazine

Type: Typical antipsychotic · All Mental Health Medicines

What Chlorpromazine is used for

  • Schizophrenia and other psychotic disorders
  • Severe nausea and vomiting
  • Intractable hiccups

Common side effects

  • Drowsiness
  • Dizziness on standing
  • Dry mouth
  • Constipation
  • Sensitivity to sunlight

Important cautions

  • Can cause movement disorders including tardive dyskinesia, and a rare life-threatening reaction (neuroleptic malignant syndrome)
  • Can affect heart rhythm and lower seizure threshold

How it comes

Tablets, liquid, injection, suppositories. This guide lists forms only — it never lists strengths or doses.

Toxicity lists: Chlorpromazine also appears on Medicines That Can Harm the Liver.

Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.