Accidental Mouthwash Ingestion: Risks and Safety Concerns Explained

I'm not sure if it can be considered as ingesting mouthwash?

Hello, doctor.
I previously received two bottles of mouthwash from my dentist.
Normally, after using it, I rinse my mouth with water about four times, but today I forgot and immediately drank water afterward.
I suddenly felt a bit of a bitter sensation in my throat, and I noticed the bottle says it's not for consumption.
I used about 10-15 milliliters, roughly a bottle cap's worth.
I also just drank some milk and took a stomach medication called Aiwai Reverse.
I'm concerned if this could cause any harm to my body or lead to kidney toxicity, or if I might need to undergo gastric lavage.
My throat feels a bit sour and bitter from the mouthwash, but I’m not sure if it’s just psychological.

If I accidentally swallowed 10-20 milliliters, what could happen? Have there been clinical cases where someone died or needed gastric lavage from such an incident? Although I spit it out before drinking water, I'm worried about any residue left in my mouth.
My family says I might just have diarrhea and that my amount is small, advising me not to go to a big hospital for gastroenterology.

I’d like to ask you, doctor, is this really safe? I'm very worried that one mouthful of mouthwash could lead to serious issues.
Thank you for your response, and I apologize for disturbing you at night.

W, 20~29 year old female. Ask Date: 2020/05/11

Dr. Chen Shidian reply Gastroenterology and Hepatology

It should not pose any health risks, but please continue to monitor the situation.

Reply Date: 2020/05/11

More Info

Accidental ingestion of mouthwash, particularly products containing active ingredients like chlorhexidine gluconate and alcohol, can understandably raise concerns about potential health risks. In your case, you mentioned that you accidentally ingested about 10-15 milliliters of mouthwash after forgetting to rinse your mouth with water. Let's break down the risks and safety concerns associated with this situation.

Composition of Mouthwash
Mouthwashes often contain antiseptic agents, flavoring agents, and alcohol. Chlorhexidine gluconate is a common antiseptic that helps reduce oral bacteria, while alcohol can act as a solvent and preservative. While these ingredients are effective for oral hygiene, they are not intended for ingestion.

Potential Risks of Ingestion
1. Gastrointestinal Irritation: Ingesting mouthwash can lead to irritation of the gastrointestinal tract. Symptoms may include nausea, vomiting, abdominal pain, or diarrhea. The amount you ingested (10-15 ml) is relatively small, and while it may cause some discomfort, it is unlikely to result in severe gastrointestinal issues.

2. Alcohol Toxicity: Mouthwash containing alcohol can pose a risk, particularly if ingested in larger quantities. Alcohol can lead to symptoms such as dizziness, headache, or even more severe effects in cases of significant ingestion. However, the amount you mentioned is unlikely to cause serious alcohol-related toxicity.

3. Chlorhexidine Effects: Chlorhexidine is generally safe when used as directed in oral care products. Ingesting small amounts may not lead to severe toxicity, but it can cause a bitter taste and potential irritation in the throat or stomach.

Clinical Cases and Recommendations
While there are no widespread reports of severe outcomes from accidental ingestion of small amounts of mouthwash, it is essential to monitor for any adverse symptoms. In clinical practice, cases of mouthwash ingestion typically do not lead to life-threatening situations, especially with small quantities. However, if ingestion leads to persistent symptoms such as severe abdominal pain, vomiting, or difficulty breathing, it is crucial to seek medical attention immediately.

What to Do Next
1. Monitor Symptoms: Keep an eye on how you feel over the next few hours. If you experience mild symptoms like a sore throat or slight nausea, it may resolve on its own. Drinking water or consuming bland foods may help soothe your stomach.

2. Avoid Further Irritants: Since you mentioned consuming milk and a stomach medication, ensure that these do not exacerbate any discomfort. If you feel unwell, consider sticking to clear fluids and bland foods until your symptoms improve.

3. Consult a Healthcare Professional: If you have ongoing concerns or if symptoms worsen, it is advisable to contact a healthcare provider. They can provide guidance based on your specific situation and may recommend further evaluation if necessary.

4. Emergency Care: If you experience severe symptoms, such as difficulty breathing, severe abdominal pain, or persistent vomiting, seek emergency medical care immediately.

Conclusion
In summary, while accidental ingestion of mouthwash can cause some gastrointestinal discomfort, the amount you ingested is unlikely to lead to severe health issues. The body's natural defenses and the relatively small quantity ingested should mitigate significant risks. However, it is always best to err on the side of caution and consult with a healthcare professional if you have any lingering concerns. Remember, your health and peace of mind are paramount, and seeking advice is a responsible step.

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