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What Is L-Lysine & Canker Sores?

Those who suffer from canker sores know there are not enough good remedies available for these small, painful ulcers that form in the mouth. L-lysine is one common home remedy that doctors may recommend. It has some success in treating canker sores.

  1. Canker Sores

    • Sometimes called aphthous sores or ulcers, canker sores are shallow, white lesions that form in the mouth. They most typically present as single sores, but can appear in painful clusters.

    L-lysine

    • L-lysine is an essential amino acid that the body uses to create healthy tissues, absorb calcium, support the immune system and many other functions.

    Sources of L-lysine

    • Small amounts of L-lysine are present in many everyday foods. It is also available as an over-the-counter supplement. The body disposes of excess L-lysine through excrement, so it is not possible to take too much of this amino acid.

    L-lysine and Canker Sores

    • Because L-lysine promotes healthy tissue function it can have a beneficial effect on canker sore outbreaks. L-lysine also improves your immune system and other bodily functions, reducing stress, which can lead to fewer canker sores.

    Medical Evidence

    • There are few medical studies that support L-lysine as having a blanket effect on canker sores, but there is enough evidence to suggest it may help as part of a larger care regimen.

    The Bottom Line

    • If you suffer from frequent canker sores a L-lysine supplement is worth a try. As will all medications and supplements, it is important to talk to you doctor first, especially if you suffer from liver or kidney disease.

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