My #1 tip for canker sores or mouth sores is to use L-Lysine(can be found at most natural food stores, vitamin shops & some drug stores) mix 1tsp in warm water, gargle and swallow. It's not the best taste in the world but it works wonders. Top 9 Home Remedies for Mouth Ulcers..
As a dental hygienist and an ulcer sufferer - I can say warm salt water is awesome. alum powder will hurt but it's worth it. swigging with Jack Daniels or Listerine also burns but speeds up healing!, Go To to get more Gossip News!