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Methyl salicylate overdose

Methyl salicylate (oil of wintergreen) is a chemical that smells like wintergreen. It is used in many over-the-counter products, including muscle ache creams. It is related to aspirin. Methyl salicylate overdose occurs when someone swallows a dangerous amount of a product containing this substance. This can be by accident or on purpose.

This article is for information only. DO NOT use it to treat or manage an actual overdose. If you or someone you are with has overdosed, call the local emergency number (such as 911), or the local poison control center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States.

Poisonous Ingredient

Methyl salicylate can be poisonous in large amounts.

Where Found

These products contain methyl salicylate:

  • Deep-heating creams used to relieve sore muscles and joints (Ben Gay, Icy Hot)
  • Oil of wintergreen
  • Solutions for vaporizers
  • Mouthwash

Other products may also contain methyl salicylate.

Symptoms

Below are symptoms of a methyl salicylate overdose in different parts of the body.

BLADDER AND KIDNEYS

EYES, EARS, NOSE, AND THROAT

HEART AND BLOOD

LUNGS AND AIRWAYS

NERVOUS SYSTEM

STOMACH AND INTESTINES

  • Nausea
  • Vomiting, possibly bloody

Home Care

Seek medical help right away. Do not make the person throw up unless poison control or a health care provider tells you to.

Before Calling Emergency

Have this information ready:

  • Person's age, weight, and condition
  • Name of the product (ingredients and strength, if known)
  • Time it was swallowed
  • Amount swallowed

Poison Control

The local poison control center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States. This national hotline 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.

You can also get online poison help now at Poisonhelp.org. Just enter the product, poison, or medicine to get expert help.

What to Expect at the Emergency Room

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

Your provider will measure and monitor your vital signs, including temperature, pulse, breathing rate, and blood pressure.

Tests that may be done include:

Treatment may include:

  • Activated charcoal
  • Breathing support, including tube through the mouth into the lungs and connected to a breathing machine (ventilator)
  • Fluids through a vein (by IV)
  • Kidney dialysis in serious cases
  • Laxatives
  • Medicine to reverse stomach inflammation and bleeding, breathing problems, and other symptoms
  • Surgery to remove burned skin (debridement)
  • Tube through the mouth into the stomach if vomiting contains blood

Outlook (Prognosis)

How well someone does depends on how much salicylate is in the blood and how quickly treatment is received. The faster the medical help is given, the better the chance is for recovery.

Most people can recover if the effect of the salicylate can be stopped.

Internal bleeding is possible, and blood transfusion may be needed. Endoscopy, or passing a tube with a camera through the mouth into the stomach, may be needed to stop internal bleeding.

Methyl salicylate is the most poisonous form of the salicylate type of chemicals.

Alternative Names

Deep heating rubs overdose; Oil of wintergreen overdose

References

Aronson JK. Salicylates, topical. In: Aronson JK, ed. Meyler's Side Effects of Drugs. 16th ed. Waltham, MA: Elsevier; 2016:293.

Hatten BW. Aspirin and nonsteroidal agents. In: Walls RM, ed. Rosen's Emergency Medicine: Concepts and Clinical Practice. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 139.

Meehan TJ. Care of the poisoned patient. In: Walls RM, ed. Rosen's Emergency Medicine: Concepts and Clinical Practice. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 135.

Nelson LS, Calello DP. Acute poisoning. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 96.

Theobald JL, Corcoran JN. Poisoning. In: Kliegman RM, St. Geme JW, Blum NJ, et al, eds. Nelson Textbook of Pediatrics. 22nd ed. Philadelphia, PA: Elsevier; 2025:chap 94.

Review Date 10/14/2025

Updated by: Jesse Borke, MD, CPE, FAAEM, FACEP, Attending Physician at Kaiser Permanente, Orange County, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.