Hydrogen Peroxide for Canker Sore: 5 Effective Remedies

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How To Get Rid Of Canker Sore 

Canker Sore

Canker sores, also known as mouth ulcers or aphthous ulcers, are sores with yellow or white-gray centers and bright red borders.

What Causes Canker Sores?

They are caused by everything from poor diet and stress to vitamin deficiencies, mouth trauma, and a weak immune system. They occur in and around the mouth, in the throat, on the inner cheek, and on the tongue, and are not to be confused with cold sores, which occur on the outer edges of the mouth.

How To Get Rid Of Canker Sore?

While not contagious, canker sores are painful and embarrassing. But you’re about to discover how to cure them safely, quickly, and naturally.

Hydrogen Peroxide for Canker Sore

Commonly used as an antiseptic or bleaching agent, Hydrogen peroxide (H2O2) is one of the most effective cures for canker sores. Let’s take a look at how it works.

Is Hydrogen Peroxide Good For Canker Sore?

Benefits Of Hydrogen Peroxide For Canker Sore:

  • Hydrogen peroxide is antibacterial and antiseptic. It kills the bacteria in and around the mouth, healing canker sores and reducing inflammation.
  • Hydrogen peroxide will produce noticeable results within 24 hours, and as it begins to work, it relieves the pain of canker sores.
  • Using hydrogen peroxide as a mouth wash on a regular basis will help maintain healthy levels of bacteria and prevent future canker sores.

How to Use Hydrogen Peroxide to Cure Canker Sores?

The popular methods listed below will relieve the pain and discomfort of canker sores and speed up the healing process. Try each one until you find the one that works best for you.
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Home Remedies For Canker Sores


1. Hydrogen Peroxide with Water

  • Mix equal quantities hydrogen peroxide and water.
  • Use the solution to rinse your mouth, swishing for 1-2 minutes, then spitting it out.
  • Or use a cotton ball to apply it directly to the sore.
  • Do not swallow the solution.
  • Do not eat or drink for an hour after treatment.
  • Repeat regularly to prevent future canker sores.

2. Hydrogen Peroxide with Salt and Baking Soda

  • Mix small amounts of hydrogen peroxide, salt, and baking soda.
  • Rinse your mouth with it 4-5 times a day.
  • Repeat regularly to prevent future sores.
Note: Baking soda neutralizes acidity in order to soothe the pain of a canker sore.

3. Hydrogen Peroxide with Milk of Magnesia

  • Rinse mouth with mouthwash or saltwater.
  • Mix equal parts hydrogen peroxide and water.
  • Use a cotton ball to apply the solution to the canker sore.
  • Leave on a few minutes, then dab milk of magnesia over it.
  • Leave it fir few minutes, then mix equal parts milk of magnesia and liquid Benadryl.
  • Rinse your mouth with it, swishing for 1-2 minutes, then spit.
  • Repeat 3-4 times a day.

4. Plain Hydrogen Peroxide

  • Use a cotton ball to apply plain hydrogen peroxide to the canker sore.
  • Or swish a capful in your mouth for 10 minutes, wait 10-15 minutes, and rinse with water.
  • Repeat once a day for 2-3 days.

5. Gargle with Hydrogen Peroxide and Zinc Lozenges

  • Mix equal parts hydrogen peroxide and water.
  • Dissolve 1-2 zinc lozenges in the solution.
  • Gargle with it, then spit it out. Do not swallow.
  • Repeat 3-4 times daily until you see results.

Tips & Precautions

Keep the following pointers in mind in order to avoid side effects while using hydrogen peroxide.
  • Swallowing hydrogen peroxide will cause an upset stomach.
  • To prevent the hydrogen peroxide from killing the good bacteria in your mouth and causing dental problems, use it only as often as your preferred method recommends.
  • In addition to using the above methods to cure and prevent canker sores, eat a balanced diet that provides your body with the vitamins, minerals, proteins, and probiotics it needs to keep you healthy.

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