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A 30-year-old member asked:

What can happen if you accidentally swallow a hydrogen peroxide teeth whitening pre-rinse product while gargling?

3 doctor answers5 doctors weighed in
Dr. James Ferguson
Pediatrics 47 years experience
My burn some: Hydrogen peroxide will actually convert to water after it released its oxygen.The teeth whitening products will burn a bit going down if you swallow some but other than transiently irritating the tissue should cause no long term problem.
Dr. Kenny Abedini
24 years experience
No problem: There is no harm if you swallow a small amount. If you have a little sensitivity, drink some water to dilute it.
Dr. Jeffrey Goldstein
Cosmetic Dentistry 34 years experience
Nothing.: Assuming you don't swallow a large amount (which is called "drinking it" you shouldn't suffer any ill effect. You body makes its own hydrogen peroxide in certain white blood cells!

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Last updated Aug 12, 2019

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