I used the rife frequency 666 and a few others ones someone gave me for canker sores and they went away in a day.
What do you think could be causing them? (i dont take any of those herbs you mentioned).
It is hard to say for sure since there are so many suspected contributors. Some people get them from biting the inside of their cheeks, or from braces or sharp edges from broken teeth. They are also common with Celiac and Crohn's, Acidic foods seem to aggravate them in some people and certain nutritional deficiencies have been implicated such as B vitamins.