Brompheniramine overdose

Brompheniramine poisoning is an overdose of brompheniramine, an antihistamine.

Poisonous Ingredient 

  • Brompheniramine  
  • Brompheniramine maleate

Where Found 

  • Dimetane  
  • Dimetapp  
  • Bromphen  
  • Chlorphed

Note: This list may not be all inclusive.


  • Body as a whole       o Unsteadiness       o Dry mouth       o Tremor       o Convulsions       o Fever       o Flushed skin  
  • Eyes, ears, nose, and throat       o Blurred vision       o Dilated pupils  
  • Heart and blood vessels       o Rapid heartbeat       o Increased blood pressure  
  • Nervous system       o Coma       o Agitation       o Drowsiness       o Nervousness       o Hallucinations       o Disorientation       o Delirium

Home Treatment 
DO NOT induce vomiting.

Before Calling Emergency 
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

Poison Control, or a local emergency number 
Call Poison Control or your local emergency number - they will instruct you if it is necessary to take the patient to the hospital. See Poison Control centers for telephone numbers and addresses. If possible, take the container with you to the emergency room.

What to expect at the emergency room 
Some or all of the following procedures may be performed:

  • Emptying stomach (gastric lavage)  
  • Administering activated charcoal  
  • Administering a laxative  
  • Treating the symptoms

Expectations (prognosis) 
If the patient survives the first 24 hours, chances of survival are good. Few patients actually die from an antihistamine overdose.

Johns Hopkins patient information

Last revised: December 3, 2012
by Gevorg A. Poghosian, Ph.D.

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All ArmMed Media material is provided for information only and is neither advice nor a substitute for proper medical care. Consult a qualified healthcare professional who understands your particular history for individual concerns.