The best replacement for canker sore is cold sore.

The best alternatives to canker sore are rated as following:
★★★★★  cold sore
★★★★  cancer
★★★  herpes
★★  fever blister
★★  ulcer
★★  abscess
★★  mouth ulcer
★★  oral cancer
★  thrush
★  cold sores
★  mouth cancer
★  blister
★  strep
★  cold sore in mouth
★  syphilis
  wisdom tooth
  gum boil
  canker
  herpes sore
  tonsil stone
  herpes on tongue
  oral herpes
  herpes inside of mouth
  strep throat
  aphthous ulcer
  inflamed taste bud

Your alternative for canker sore is not listed? Suggest!
Speaking about canker sore, one probably shouldn't forget about swollen lymph node.

Other search terms related to canker sore and their ratings are:
★★★★★ swollen lymph node
You have in mind a companion for canker sore and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of canker sore in all years. Click on graph for more.
canker sore
cold sore
cancer