dmplaura;

I find it interesting that you suffered from canker sores for awhile. I went thru 7 years of having them so bad I could hardly talk. This was pre-MS diagnosis and I was constantly going to the doc begging them for help. I actually was 12 lbs lighter when I suffered from them....it was hard to eat.
At the same time I endured red eyes caused by episcleritis then it all miraculously faded away and I am only bothered once in awhile.
Doctors now think my immune system was under attack and going awry.

Also, quitting smoking can cause cankers sores to pop up too. I have not had a cigarette since Sept 29 (on Chantix).
As for me I would recommend any smoker to try the stuff. After about 2.5 weeks of taking it I suddenly 'forgot' I smoked. Its the magic pill I've been hoping for. Doc says I am having a great reaction to the drug...but I know others who quit with Chantix saying the same thing. I've had a few canker sores pop up too.

I have a friend who swears she got sicker after quitting smoking! Eventually things evened out but it is a real shock to the body and a really tough addiction to kick. I hope you feel better soon. Big Hug