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how to get rid of a canker sore in 24 hours

Canker sores are also called  aphthous ulcers. They are tiny, deep lesions on the soft tissues in your mouth. They can be present on the base of your gums too. Canker Sores are not contagious but can be extremely painful while chewing the food. It can be caused by acidic foods, stress, or any minor injuries inside your mouth. It looks like a white or yellowish mouth sore with a red border. It gets huge with time and lasts for many days. Are you wondering  how to get rid of a canker sore in 24 hours? Let’s read about the fastest way possible to treat canker sores.

Easy Ways to Get Rid of Canker Sore in 24 Hours?

  1. Alum Powder

Alum Powder is made up of aluminium potassium sulphate. Alum powder is generally used to preserve food items and pickled vegetables. Alum’s astringent features could be beneficial to shrink tissues and cure canker sores. 

  1. Mix a few drops of water with a small amount of alum powder and make its paste.
  2. Now apply the paste to the abscess.
  3. Keep it for at least one minute.
  4. Rinse your mouth properly.
  5. Keep doing this regularly until the canker is cured. 

    2.  Rinsing with Saltwater

A reliable home remedy for mouth sores of any type is to rinse your mouth with salt water. It might cure the canker sore as soon as possible. To use:

  1. Take ½ cup of warm water and mix it well with a teaspoon of salt. 
  2. After 15-20 seconds, churn this mixture in your mouth and then spit it out.
  3. Keep repeating it as required every few hours.

3. Rinse with Baking Soda

Baking soda restores the pH balance and diminishes inflammation, which may cure the canker sores. 

  1. Take ½ cup of water and mix it with 1 teaspoon baking soda.
  2. Churn it well after 15 to 30 seconds and then spit it out.
  3. Repeat the processes as many times as required.
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Although consuming baking soda won’t hurt you, you should avoid it as it’s quite salty. 

4. Yogurt

It is unknown what exactly causes canker sores. Reasons for this might include inflammatory bowel disease(IBD) or the Helicobacter pylori(H.pylori) bacteria. It is disclosed that living probiotic cultures, such as Lactobacillus, can aid the eradication of H. pylori. Taking yogurt with live probiotic cultures is beneficial if either of those conditions leads to canker sores. 

Eat a cup of yogurt daily to reduce or cure canker sore. This is the best method to follow if you are wondering how to get rid of a canker sore in 24 hours. 

5. Honey

Honey is usually used for its antibacterial and anti-inflammatory features. Honey is beneficial in minimizing the canker sore size, irritation, and redness. It can also treat or avoid multiple infections. About four times a day, apply honey to the sore. Don’t worry if you swallow it because honey is consumable. 

5. Coconut Oil

It has been demonstrated that due to the rising concentration of lauric acid in coconut oil, it has  antibacterial capabilities. It might help in aiding the bacterially-induced canker sores and stop them from expanding. Additionally, a natural anti-inflammatory, coconut oil may lessen the redness and discomfort. Apply coconut oil freely to the sore. Apply again multiple times daily until the canker sore is cured. 

6. Apply Ice to the Sore

If you are going through pain and a burning sensation, then applying ice to your sore can give you relief. Cover a small ice cube inside a kitchen paper and place it on the sore. Do not put the ice directly on the skin. Ice can be useful to reduce any inflammation of the sore caused by irritation. 

This method is mostly beneficial for canker sores inside the lips. The rest surface of the mouth may be difficult to reach with an ice cube. 

7. Hydrogen Peroxide

Image Credit: Springvaledental           

Hydrogen peroxide heals canker sores by disinfecting the area and reducing oral bacterial growth. To use:
1. Mix 3 per cent hydrogen peroxide solution with balanced parts of water.

2. Spray some of the mixture onto a cotton swab.

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3. Directly apply the mixture to the sore for multiple times.

Diluted hydrogen peroxide can also be beneficial for mouthwash. Keep swishing the mouthwash around your mouth for a minute. 

8. Milk of Magnesia

Image Credit: Credihealth

Milk of magnesia consists of magnesium hydroxide. It’s both an acid neutralizer and a laxative. When used orally, it could change the pH of your tongue, which prevents the sore from thriving. It may coat the sore to help prevent the pain and irritation. 

  1. Press your canker sore with a little milk of magnesia.
  2. After keeping it for a few seconds, rinse.
  3. Repeat this at least three times every day.

9. Chamomile Compress

Image Credit: Peacockteaandcoffee

An effective and natural solution for wound healing and pain relief is chamomile. Levomenol and azulene, two substances with anti-inflammatory and anti-bacterial properties, are present in German chamomile. Sores can be treated with chamomile tea bags. Place a chamomile tea bag to the sore and leave it there for a minute. Ensure that the tea bag should not be too hot. Also, you can use fresh chamomile tea. Repeat this process twice or thrice a day.

10. DGL Mouthwash

Image Credit: Osfhealthcare

Deglycyrrhizinated liquorice is a herbal liquorice extract. It is generally used to make DGL mouthwash of liquorice on ulcers. It has anti-inflammatory characteristics. Also, it is a natural therapy for stomach ulcers. DGL is a supplement that you can use to create mouthwash. To use:
1. Take a cup of water. Mix it well with the 200 milligrams of powder from 1 DGL capsule.

  1. Whirl the mixture in your mouth for three times. 
  2. Now spit it out. 

DGL also has mouth patches to cure the canker sores. You have to apply the patch to the sore and leave it at least for 30 minutes. 


Most of the canker sores are not dangerous. They go on their own, but it takes a long time, and that may be painful. There is nothing to worry about if you know how to get rid of a canker sore in 24 hours.  You have a larger canker sore, and you are in extreme pain, so it is best suggested to visit your doctor. We hope we were able to give you the best solution for Canker sores. Read our more articles to know about such more effective healthcare remedies. 

Frequently Asked Questions

Q1. What causes canker sores?

A canker sore is activated by emotional stress, vitamin deficiencies, hormonal changes, food allergies, or minor injuries in your mouth. 

Q2. What does a canker sore look like?

Canker sores generally look like small, round, white or yellow sores with a red border inside the lip or cheek. 

Q3. Is salt beneficial for canker sores?

Gargling with salt water is, so far, the best way to get rid of canker sores.