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Menthol overdose

Definition

Menthol is used as a flavoring agent for candy and other products. This article discusses menthol poisoning from swallowing pure menthol.

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.

Poisonous Ingredient

Menthol

Where Found

Menthol may be found in:

Note: This list may not include all uses of menthol.

Symptoms

Bladder and kidneys:

Lungs:

Gastrointestinal:

Heart and blood:

Nervous system:

Home Care

Seek immediate medical help. If the menthol is in ointment/cream form, wipe away any that has contacted the skin or eyes, and flush with water for several minutes. Call poison control for further guidance.

Before Calling Emergency

Determine the following information:

  • The patient's age, weight, and condition
  • The name of the product (ingredients and strengths, if known)
  • Time it was swallowed
  • Amount swallowed

Poison Control

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: Poison control center - emergency number

What to Expect at the Emergency Room

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

  • Activated charcoal
  • Breathing support, including tube through the mouth and breathing machine (ventilator)
  • EKG (heart tracing)
  • Chest x-ray
  • Fluids through a vein (by IV)
  • Laxative
  • Medication to reverse the effects of the poison
  • Tube down the windpipe and lungs (bronchoscopy) to look for damage and burns
  • Tube through the mouth into the stomach to empty the stomach (gastric lavage)

Outlook (Prognosis)

How well you do depends on the amount of poison swallowed and how quickly medical treatment is received. The faster you get medical help, the better the chance for recovery.

Swallowing such poisons can have severe effects on many parts of the body.

However, pure menthol is not readily available. The menthol found in many over-the-counter products is usually watered down and mixed with other ingredients. Therefore, how well a patient does also depends on the other ingredients in the product.

References

Maypole J, Woolf AD, Donovan JW. Essential oils. In: Shannon MW, Borron SW, Burns MJ, eds. Haddad and Winchester's Clinical Management of Poisoning and Drug Overdose. 4th ed. Philadelphia, PA: Saunders Elsevier; 2007:chap 101.

Nair B. Final report on the safety assessment of Mentha Piperita (Peppermint) Oil, Mentha Piperita (Peppermint) Leaf Extract, Mentha Piperita (Peppermint) Leaf, and Mentha Piperita (Peppermint) Leaf Water. Int J Toxicol. 2001;20 Suppl 3:61-73.


Review Date: 1/20/2014
Reviewed By: Jacob L. Heller, MD, MHA, Emergency Medicine, Virginia Mason Medical Center, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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