★★★★★
I had an annoying and painful canker sore way back on my tongue, too much info..., but searched and found this site, only had distilled white vinegar, gargled twice for one minute twice and the sore really calmed down in 5 minutes, (stinging of course) then the next day gone. Assume apple cider vinegar is effective as well, but have used alum, peroxide, warm salt solution, ambesol and other OTC meds, the vinegar is the best.
