Canker Sores (Mouth Ulcers)

I get them often as well. (Or I used too)

1)  Toothpastes and mouthwashes that contain the foaming agent sodium lauryl sulphate (SLS) can cause, or have an aggravating effect on canker sores. Check your toothpaste!

I have suffered from canker sores since I was a child, often getting 3 at a time. A few years ago I started using toothpaste without SLS and the problem completely went away. It really felt like a miracle! If you are in the US, the toothpaste, Biotene is good, but expensive. In the UK, Superdrug has a toothpaste for 35p called Just Toothpaste that doesn't have SLS.
Good luck, I know how horrible it can be! 

I'm much like pkessler, I am allergic to SLS, (which is derived from coconut FYI.) I switched to Sensodyne toothpaste and it cleared up as well.  I'm going to try the Superdrug toothpaste, can't beat .35p, thanks for that.

Thanks guys.  I'll give some of these a try.  I get canker sores from time to time, but these ones are killers! 

(Ok, no more whining about them, promise!)

I've had those killer ones (I think combined with stress) there is nothing worse.  I hope they get better soon.

I've had those killer ones (I think combined with stress) there is nothing worse. 

I suspect stress is probably at the root of the problem....guess I'd better learn to deal w/it in a more healthy manner! 

just thought i'd add my two cents...

i started getting them when i was about 15 (huge ones...like a cluster of them the size of a dime!) and quickly realized that it was from citrus fruits (oranges, tomatoes, lemons, limes, grapefruit, etc.).  i stopped eating those and i don't get them anymore....well...actually...i get them sometimes when i eat spaghetti bolognese (not nearly as severe as when i was 15 though).  when i do, i use Zilactin (US) or Abreva (US) and they go away pretty quickly.  if you'd like a natural remedy, you can try using tea tree oil.  it doesn't taste all that great, but it works.

I have suffered from canker sores since I was a child, often getting 3 at a time. A few years ago I started using toothpaste without SLS and the problem completely went away. It really felt like a miracle! If you are in the US, the toothpaste, Biotene is good, but expensive. In the UK, Superdrug has a toothpaste for 35p called Just Toothpaste that doesn't have SLS.
Good luck, I know how horrible it can be! 

Yes my husband found exactly the same thing - switched to Sensodyne Ultra Gel (didn't know about the Superdrug cheap version though!).