I used to get these all the time, so I've tried a few different things. The problem with canker sore treatments is that it's difficult objectively to determine what's effective and what isn't, since they'll always rise and fall parabolically given enough time. With that being said, the following products have my endorsement:
- Oral-B Amosan rinse: I just Googled it and apparently it's discontinued, but the active ingredient is just hydrogen peroxide. Treats the issue at its source, as it's antibiotic.
- Zilactin-B gel: shields the sore, allowing you to eat and drink without being interrupted. Kind of an end-of-pipe solution so I'm not sure how well it helps the sore heal, but it works wonders if the pain's really bothering you.
- Orajel: applied the same way as Zilactin-B, but it doesn't cover it as well. What I like about it though is that I noticed after a day or two of application, I can kind of swab out the gel/dead skin combination, and that seems to actually help it heal.
It probably goes without saying, but practicing proper oral hygiene always helps too. I've noticed that if I go an entire day without brushing my teeth, there's a 10-20% chance to develop a canker sore in that week.
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