Poisonous Ingredient

• Oxalic acid
• Asparagine, a protein found in this plant

Note: Leaves and stems are the most dangerous when eaten in large amounts.

Where Found

Elephant ear grows naturally in tropical and subtropical areas, but is easily found in northern climates as well.

Symptoms

• Diarrhea
• Nausea
• Redness, pain, and burning of the eyes
• Severe burning in the mouth and throat
• Swelling of the tongue, mouth, and eyes
• Vomiting

Home Care

Wipe out the mouth with a cold, wet cloth. Wash off any plant sap on the skin and in the eyes.

Do NOT make a person throw up unless told to do so by poison control or a health care professional.

Before Calling Emergency

Determine the following information:

• Patient's age, weight, and condition
• Part of plant swallowed
• Time 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 plant 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 the patient's vital signs, including temperature, pulse, breathing rate, and blood pressure. Symptoms will be treated as appropriate.

Outlook (Prognosis)

In rare cases, oxalate plants may cause swelling severe enough to block the airways.

References

Graeme K. Toxic plant ingestions. In: Auerbach PS, ed. Wilderness Medicine. 5th ed. Philadelphia, Pa: Mosby Elsevier; 2007:chap 58.

Update Date: 1/15/2012

Reviewed by: Eric Perez, MD, St. Luke's / Roosevelt Hospital Center, NY, NY, and Pegasus Emergency Group (Meadowlands and Hunterdon Medical Centers), NJ. Review provided by VeriMed Healthcare Network.