Does applying a tea bag to a canker sore cause it to diminish or disappear?
Examples of this claim include:
- Kid's Health (See Page 3)
Some doctors suggest putting wet black tea bags on sores. Black tea contains tannin, a substance that can relieve pain. You can also find tannin in some over-the-counter medicines
Have some tea. Several experts, among them dermatologist Jerome Z. Litt, M.D., recommend applying a wet, black tea bag to the ulcer. Black tea contains tannin, an astringent that "may pleasantly surprise you" with its pain-relieving ability, he says. There are over-the-counter medications available that contain tannin, such as Tanac.
Try using a used tea bag on the canker. Press it on the sore like a wad of chewing tobacco and hold it there as long as you can. The tannic acid in the tea is an astringent and will relieve pain and aid healing.
Related: Can vegemite or marmite heal ulcers?