Gargle or swish warm water with salt in it 2-3 times a day until
the canker sore is gone. Salt is a natural healer and is great for
canker sores.
View page
You can chew while having a canker sore on your lip. If you spit
right where the canker sore is though it will burn so just be
careful
View page
A canker sore is an open sore inside the mouth, caused by
various reasons including stress. They are not cancerous or
contagious, and may or may not be genetic. There are no long term
effects of having a canker sore.