Julie (Boston, Ma, Usa ) on 12/12/2011

Warning
I have Celiac disease which means my body rejects/can not process wheat/barley gutens) One of my symptoms after exposure to wheat are canker sores, I use to suffer from them constantly before I fully cut out wheat. Now I do not eat any wheat or gluten products on purpose, but I live in a gluten filled world so sometimes the slightest bit will slip into a food I eat or personal care product and when that happens: hello cankers!
This weekend I was glutened so I decided to try ACV and am now able to say with certainty that my cankers are not caused by bacteria. The bad news? I now look like I lost a fight with a fist! The pain went away, but the lip became swollen at an alarming rate. I used a salt wash to clear the Viniger and now have an aspirin sitting on a sore. The swelling seems to be going down already.
If you too suffer with cankers from Celiac issues, take caution as celiac cankers are most likely an acid issue and not bacteria. Too bad I didn't read that before the fat lip!
Cselestyna (Calgary, Alberta) on 07/13/2010

Okay so I have the hugest canker sore between my gums and cheek... I love acv for everything. But when I tried this tip last night my mouth was in so much pain I couldn't sleep! I felt the pain right down to the root of my teeth, even my hair hurt. Finally I had to rinse my mouth with warm salt water. So if this works for you then great but personally it was NOT a good experience. However I will continue to take it for other things.
Jess (Rocky Point, Ny Usa) on 11/26/2009

used ACV on a qtip on My sores- got MORE! grew into a huge sore and got more on my tounge- all the pain for nothing! Went to the dentist, who referred me to an oral surgeon who confirmed that it had only aggravated my sores... DONT USE THIS!
Brock (Brentwood, California) on 12/14/2008

Apple Cider Vinegar did not help my canker sore. I used a q-tip filled with ACV and it burned alot and had no relief within the next 24 hours.
Nick (Quebec, QC, Canada) on 10/08/2008

Apple Cider Vinegar: I used this product for my canker sores but it only got worse. Not much worse, but still. But now I finally understand why it doesn't work on some people or even makes it worse...Most canker sores are caused by a specific type of bacteria while this vinegar can kill it and speeds healing. But in less common cases, canker sores are caused by acidity. In this case the vinegar, which is acid, worsens the case. If your symptom worsens, rinse mouth regularly with warm salt water to counter the acid.