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A member asked:
Will blue listerine stain your teeth?
3 doctors weighed in across 2 answers
Can stain: If has thymol and eucalyptol ingredients can cause yello staining of teeth...
Answered 5/5/2015
4.8k views
No: The amount of medication in listerine is high enough to help reduce bacteria, but not high enough to cause any noticeable discoloration. There are so many sources of tooth stain (tea, coffee, red wine, tobacco) it would be very rare that listerine would be the cause. The benefits far outweigh any cosmetic risks. The blue color is a a food grade dye. May dye your tongue temporarily-like blueberries.
Answered 9/28/2016
4.8k views
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