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Thyroid preparation overdose

Definition

Poisonous Ingredient

• Levothyroxine
• Liothyronine
• Liotrix
• Thyroid

Note: This list may not be all inclusive.

Where Found

• Levothyroxine (Synthroid, Levothroid)
• Liothyronine (Cytomel)
• Liotrix (Thyrolar, Euthroid)
• Other thyroid medication

Note: This list may not be all inclusive.

Symptoms

• Headache
• Nervousness
• Irritability
• Chest pain
• Excessive sweating
• Changes in menstrual pattern
• Fever
• Skin flushing
• Dilated pupils
• Nausea and vomiting
• Rapid heartbeat
• Shock
• High blood pressure
• Convulsions

Home Care

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

The NationalPoison 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 U.S. 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.

What to Expect at the Emergency Room

The patient may be given activated charcoal and a laxative. Symptoms will be treated as needed.

Some or all of the following procedures may be performed:

• EKG
• Blood tests to check thyroid level

Outlook (Prognosis)

Patients who receive quick treatment make a good recovery. Cardiac complications may lead to death. 

Symptoms are often delayed up to one week. They may be treated successfully with several medications.

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Review Date: 2/13/2006
Reviewed By: Stephen C Acosta, MD, Department of Emergency Medicine, Portland VA MedicalCenter, Portland, OR. Review provided by VeriMed Healthcare Network.

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