Any great canker sore remedies out there?

I use to get them a lot usually in groups very painful due to vitamin deficiency.That might not be why you have one but I would try a multivitamin if your not already taking one some thing high with vitamin B12, foliate (folic acid), and iron, it cant hurt. I've tried a few things but these brought the most relieve for me: changing toothpaste,over the counter mouth rinses made for mouth sores which helped me for usually a few hours might be easier since its in a tough spot. Also raw honey helped numb them some. when they got real bad i used a mouth pain relieving liquid with benzociane( to numb it) in it that was good because it creates a seal and blocks out food and particles to help it heal but stings like a sob, and then at night rinse with warm salt water. Hope that helps and you feel some relieve soon. From a person who has had a couple for weeks on end i know they suck big time.good luck