Chlorpromazine is a prescription medication used to treat pyschotic disorders. It may also be used for other reasons, such as preventing nausea and vomiting.

Chlorpromazine overdose occurs when someone accidentally or intentionally takes more than the normal or recommended amount of this medication.

This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such as 911) or the National Poison Control Center at 1-800-222-1222.

Chlorpromazine

• Thorazine
• Largactil

Note: This list may not be all-inclusive.

• Airways and lungs
  • No breathing
  • Rapid breathing
  • Shallow breathing
• Bladder and kidneys
  • Urinary hesitancy
  • Inability to urinate
• Eyes, ears, nose, mouth, and throat
  • Blurred vision
  • Difficulty swallowing
  • Drooling
  • Dry mouth
  • Stuffy nose
  • Ulcers on the gums, tongue, or in the throat
  • Yellow eyes
• Heart and blood
  • High or severely low blood pressure
  • Rapid, irregular heartbeat
• Muscles, bones, and joints
  • Muscle spasms
  • Stiff muscles in neck or back
• Nervous system
  • Coma
  • Confusion
  • Convulsions
  • Drowsiness
  • Fainting
  • Fever
  • Hallucinations (rare)
  • Irritability
  • Low body temperature
  • Tremor
  • Uncoordinated movement
  • Weakness
• Reproductive system
  • Change in female menstrual pattern
• Skin
  • Bluish skin color
  • Rash
• Stomach and intestines
  • Constipation
  • Loss of appetite
  • Nausea