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

• Bladder and kidneys
  • Urinary hesitancy
• Eyes, ears, nose, mouth, and throat
  • Blurred vision
  • Difficulty swallowing
  • Dry mouth
  • Excessive salivation
  • Stuffy nose
  • Ulcers on the gums, tongue, or in the throat
  • Yellow eyes
• Heart and blood
  • Low blood pressure (severe)
  • Rapid, irregular heartbeat
• Muscles, bones, and joints
  • Muscle spasms
  • Stiff muscles in neck or back
• Nervous system
  • Coma
  • Convulsions
  • Disorientation
  • Drowsiness
  • Fever
  • Low body temperature
  • Tremor
  • Uncoordinated movement
  • Weakness
• Reproductive system
  • Change in female menstrual pattern
• Skin
  • Rash
• Stomach and intestines
  • Constipation
  • Loss of appetite
  • Nausea

Seek immediate medical help. Do NOT make a person throw up unless told to do so by poison control or a health care professional.

Determine the following information:

• Patient's age, weight, and condition
• The name of the product (ingredients and strengths, if known)
• When it was swallowed
• The amount swallowed
• If the medication was prescribed for the patient

The National Poison Control Center (1-800-222-1222) can be called from anywhere in the United States. This national hotline number will let you talk to experts in poisoning. They will give you further instructions.

This is a free and confidential service. All local poison control centers in the United States use this national number. You should call if you have any questions about poisoning or poison prevention. It does NOT need to be an emergency. You can call for any reason, 24 hours a day, 7 days a week.

Take the container with you to the hospital, if possible.

See: National Poison Control Center

The health care provider will measure and monitor the patient's vital signs, including temperature, pulse, breathing rate, and blood pressure. Symptoms will be treated as appropriate. The patient may receive:

• Activated charcoal
• Fluids by IV
• Laxative
• Medicine (antidote) to reverse the effect of the poison
• Tube through the mouth into the stomach to wash out the stomach (gastric lavage)

Recovery depends on the nature of the damage done by the overdose. Survival past 2 weeks is usually a good sign, with full recovery taking 4 to 8 weeks.