Health Encyclopedia
Mouthwash overdose
Definition
This poisoning from an overdose of mouthwash.
Alternative Names
Listerine overdose; Antiseptic mouth rinse overdosePoisonous Ingredient
- Ethanol (ethyl alcohol)
- Methyl salicylate
- Chlorhexidine gluconate
- Hydrogen peroxide
Where Found
Many brands of mouthwash including Listerine, Scope, and Rembrandt.
Note: This list may not be all inclusive.
Symptoms
- Body as a whole
- Respiratory
- Deep breathing - may be rapid
- Rapid breathing - may be shallow
- Slowed respirations
- Stopped breathing
- Skin
- Bluish skin (lips and fingernails)
- Gastrointestinal
- Heart and blood vessels
- Drop in blood pressure
- Nervous system
Before Calling Emergency
Determine the following:
- 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
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 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.
Take the container with you to the emergency room.
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. Blood alcohol levels will also be checked.
The patient may receive:
- Fluids
- Medicines to treat symptoms
- Activated charcoal
- Laxative
- A nasogastric (NG) tube thru the nose into the stomach to empty the stomach (gastric lavage)
- Artificial respiration
- Kidney dialysis
The patient may be admitted to the hospital.
Outlook (Prognosis)
If the patient survives the first 24 hours without any major problems, survival is very likely.
Reviewed By: Janeen R. Azare, PhD, MSPH, Department of Medicine, Memorial Sloan-KetteringCancer Center, New York, NY. Review provided by VeriMed Healthcare Network.

