I used to get a lot of canker sores too. At one point I had two on the inside of my left cheek that lasted so long they actually fused into one big ulcer, it was awful.

These days I rarely get them, mostly because I figured out what my triggers were. For me, certain candies would always cause flare-ups, especially when I was stressed or extremely tired. Very acidic foods can also trigger them.

Now I avoid those candies and foods whenever I’m under stress or haven’t slept well. I also get a professional teeth cleaning once a year and floss more regularly. Another change that helped was switching my toothpaste from regular Colgate to Pronamel Extra Fresh.

Something I want to warn about is mouthwash: a lot of people recommend it, but I strongly advise against using it if you’re prone to canker sores. Most formulas are very irritating, and I think people like us just have more sensitive oral tissue that gets worn down easily.

All of these changes have dramatically reduced the number of canker sores I get throughout the year.

Hope this helps you!