Meclofenamate overdose

Poisoning from an overdose of Meclomen, which is a nonsteroidal anti-inflammatory.

Poisonous Ingredient 

  • meclofenamate

Where Found 

  • Meclomen  
  • Meclofen

Note: This list may not be all inclusive.


  • body as a whole       o unsteadiness  
  • respiratory       o wheezing  
  • skin       o rash  
  • eyes, ears, nose, and throat       o ringing in the ears       o blurred vision  
  • gastrointestinal       o nausea, Vomiting       o diarrhea       o Abdominal pain       o possible loss of blood in the stomach and intestinal areas  
  • nervous system       o headache       o agitation       o incoherence (not understandable)       o confusion       o coma       o drowsiness       o dizziness       o seizures

Before Calling Emergency 
Determine the following information:

  • the patient’s age, weight, and condition  
  • the name of the product (ingredients and strengths if known)  
  • the time it was swallowed  
  • the amount swallowed  
  • if the medication was prescribed for the patient

Poison Control, or a local emergency number 
They will instruct you if it is necessary to take the person to the hospital. See Poison Control centers for telephone numbers and addresses. 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:

  • Induce emesis.  
  • Administer activated charcoal.  
  • Administer a laxative.  
  • Treat the symptoms.

Expectations (prognosis) 
Recovery is very likely if the acidification of the blood can be neutralized and maintained near normal levels.

Johns Hopkins patient information

Last revised: December 2, 2012
by Arthur A. Poghosian, M.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.