kiwi fruit, make canker sores disappear

Canker sores, technically known as aphthous ulcers, are frequently confused with cold sores, though they are not the same thing at all. Cold sores are caused by an outbreak of herpes virus 1. Canker sores are not caused by any virus. Sometimes they just appear mysteriously. At other times, they are the result of an injury to the mouth or tongue, such as when you bite your cheek or eat some sharp chips that abrade the tongue. But how can you make canker sores disappear?

Kiwi Fruit Against Canker Sores:

Q. Thanks to the People’s Pharmacy, I have had wonderful luck with kiwi fruit to treat canker sores. I peel and slice a ripe kiwi, then hold each slice against the sore(s) with my tongue for a minute or so before chewing and swallowing it. Usually, I feel relief within an hour.

In the uncommon event that the canker sore persists, I eat another kiwi the same way, the next day. It has never taken more than two kiwis for me to banish a canker sore, and I must say, I find it much more pleasant than another remedy you write about: sauerkraut juice.

How Might Kiwi Fruit Be Working?

A. Over the years we have heard from numerous readers that eating kiwi fruit as you describe can heal canker sores quickly. We’ve never had an explanation for this terrific remedy.

Kiwi for Bedsores:

We still don’t, but we may be getting a bit closer. We were fascinated to see a randomized clinical trial comparing kiwi fruit extract to normal saline solution for the healing of bedsores (Mohajeri et al, Indian Journal of Surgery, Dec. 2015, Supplement 2).  The study was small, with only 40 patients, but the differences between the two groups were significant. Although the skin and the surface of the tongue or cheek are different, both are epithelial tissues.

Kiwi for Burns:

Apparently the protein-dissolving enzyme in kiwi fruit, actinidin, can help speed healing. Kiwi extract has also been found helpful in healing burns (Mohajeri et al, Surgery, Nov. 2010).

You’ll find other options for treating canker sores (including sauerkraut juice) in our book, The People’s Pharmacy Quick & Handy Home Remedies.

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  1. mommabear
    Select an Option

    For canker sores, I have used table salt on a dampened finger and held it on the sore a minute. If the sore is where I can dry it first, it works better. This helps mine heal very quickly. It has been years since I have had one.

  2. Josh

    Exciting to think that the little old kiwi fruit could treat the symptoms and longevity of a canker sore. But, what might have caused the canker sore?

    I am a practicing general dentist and I’d like to advise all of the readers that DO get canker sores to immediately change their toothpaste. Nearly every name brand toothpaste contains sodium laurel sulfate (SLS) – a common detergent. Turn over your bottle of hair shampoo. One of the first three ingredients will be SLS. This ingredient throws off the balance of your mouth and your body then needs to repopulate certain bacteria and neutralize your mouth. For some people, the temporary imbalance can yield canker sores.

    Weleda, JASON, Burt’s Bees and Dr. Ken’s are a few of the companies whom manufacture SLS-free toothpaste. Switch your toothpaste and you will notice a serious drop in canker sores.

  3. Karen
    Spokane, WA

    I am gluten intolerant and end up
    with a canker sore in my mouth
    when I have eaten gluten by mistake.

  4. Jim

    I’ve always used powdered Alum (a spice used in pickling) for canker sores – wet finger slightly, dip in powder and press on sore. Let spittle drain into sink for about a minute. Rinse. I think it puffs up the sore allowing it to heal but probably has some analgesic properties as well. I seem to get canker sores when traveling so keep a little container of powder with me.

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