Lime juice...: The citric acid in lime juice can sting or burn if you have an open wound in your mouth such as an ulcer or any tear in the mucous membrane which lines your mouth. I wouldn't suggest using it for a sore mouth. It probably wouldn't do any real damage, but it would likely be uncomfortable for awhile.
Answered 3/26/2013
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A doctor has provided 1 answer
3 doctors weighed in across 3 answers
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