Does a more acidic mouth make canker sores more likely? Here is what studies find about salivary pH in people with recurrent ulcers, plus practical, low-risk ways to support a healthier pH.

If you get recurring canker sores, sodium lauryl sulfate (SLS) in toothpaste may be a trigger or irritant. Here is what studies show about SLS-free toothpaste, plus how to switch and what ingredients to look for.

What the research says about vitamin B12, folate, and other B vitamins in recurrent canker sores, plus a practical, measured way to test and supplement.

When OTC gels and patches are not enough: chemical cautery, silver nitrate, dental lasers, prescription anti-inflammatories, and what is actually accessible in the US vs EU.

Licorice root has a long history as a mouth-soothing herb. Here’s what it is, why it might help canker sores, how people use it, and what the clinical studies actually suggest.

A practical guide to common OTC canker sore options like numbing gels, protective liquids, patches, rinses, and oral pain relievers, plus what they do and when to seek help.

A collection of natural and traditional remedies people commonly try for canker sores, how they are used, and what they are trying to achieve (mostly soothing, not curing).