DIY Canker Sore Treatments [Remedies to reduce the healing time]

You might have heard about the effect of certain home remedies on the mucous membrane’ health. But you need something that will work fast and eliminate the annoying canker sores, so the important question is

How to get rid of a canker sore overnight?

The ingredients listed below are proven to have a great impact on most mucosal infections. Compared to canker sore medicines, they have a milder effect, but, on the other hand, they contain no chemically derived compounds. Also, most of them are already available on your kitchen countertop, so all you need to do is see how to use them!

How to get rid of a canker sore overnight?

Alum powder

This is another awesome ingredient, which we added to our best canker sore treatment article. Unfortunately, you may experience some stinging sensation at first but the effect comes almost immediately. Alum powder is used to dehydrate the ulcers, letting them heal faster than they usually will.

Directions: Dilute a very small amount of alum powder (1/8 of a teaspoon) into some water and make a paste. Apply the canker sore ointment to the area affected, using a Q-tip. Leave it for 1-2 minutes, then rinse carefully. The next day, repeat the same procedure (the sore should disappear after 2-3 consecutive applications).

Zinc Lozenges

Zinc deficiency is a common cause for the appearance of mouth ulcers. The natural healing properties of zinc make it a great canker sore treatment while eliminating bacterial infections.

So, zing lozenge will make your ulcerations heal faster and become less painful. Many canker sore sufferers claim that sucking zinc lozenges dramatically decreases the pain and discomfort, caused by canker sores.

Watermelon frost

Watermelon Frost is a popular Chinese canker sore medicine, showing multiple benefits in the treatment process. According to patients, in the beginning, it may leave a stinging sensation, which is quite unpleasant but will disappear within a short period of time.

The price aspect is also encouraging – compared to other over-the-counter canker sores medicines, this one is cheaper and a single bottle lasts a very long time, even if you have multiple mouth ulcerations.

There are patients who never travel without taking watermelon frost in their baggage. Many reviews report that the product completely eliminates the canker sore in only 1 day. There’s an impressive number of people claiming this is the best cure for canker sores so far.


Yogurt is a nice option when you have mouth ulcers. It might not be the best canker sore medicine but at least it’s delicious enough and it won’t irritate the mucosal tissue. It contains acidophilic cultures that can treat and prevent the appearance of further aphthae in the oral cavity. At least four tablespoons of yogurt per day are needed to prevent the infection to reoccur. To treat aphthae, it is necessary to consume 400gr yogurt a day.

Avoid foods that provoke increased sensitivity or allergic reactions. They may further aggravate the condition. Occasionally, mouth ulcers may form as a result of gluten intolerance.


Honey contains vitamins and minerals, and its antiseptic properties help to quickly cure aphthous stomatitis. The sweet bee product is believed to be the best canker sore medicine of natural origin you can easily find in your kitchen. In case you decide to use honey as a remedy against painful canker sores, prepare for a little more pain.

Directions: Apply 1 teaspoon of honey to and around the aphthae. Leave it for a few minutes (the pain will not last so long). Rinse your mouth with lukewarm water and repeat the procedure twice a day. It is recommended to use crystallized honey rather than liquid.

Coconut oil

Coconut oil has an antifungal and antibacterial property and is, therefore, an effective mouth sore remedy. Try to find organic coconut oil, because its effect will be faster and no adverse reactions will follow.

Directions: Apply the coconut oil to the aphthae several times a day using a Q-tip or clean finger. Also “rinse” your mouth twice a day, consuming 1 tablespoon of coconut oil and holding it in your mouth.

Hydrogen peroxide

You can prepare a homemade mouthwash from equal parts of water and 3% hydrogen peroxide. Use regular rinsing with the so-prepared canker sore medicine – it will help you to get rid of bacteria and microbes. It also relieves small inflammations in the mouth, canker sores and swollen gums. An additional benefit is that it also removes the bad breath. Do not swallow!

Milk of magnesia

This is the liquid suspension of magnesium hydroxide. Just soak a cotton swab and apply it to the area affected (3-4 times a day) until the ulceration heals completely. Milk of magnesia is a great mouth sore remedy when applied in combination with hydrogen peroxide as it immediately reduces the pain while promoting the healing process.

Urine therapy

Urine therapy is a very appropriate option for the healing of teeth and gum problems. Urine will dry up and make canker sores go away a lot quicker. You can either gargle or soak a Q-tip with some urine – this will quickly resolve the problem.

Although it might seem very uncommon, this is a very popular canker sore treatment even for modern society.

Chamomile compress

Chamomile has a soothing effect on the mucous membranes, including the lining of the mouth. Strong chamomile tea or a mild tincture can be used for gargling, 3-4 times a day.

You can also soak a cotton swab in the chamomile tea and apply it on the ulcerations – you will experience relief from the pain, while the canker sore will start healing. The herbal canker sore treatment has been used from centuries and the positive effect was proven by previous generations.


The active ingredients of this natural canker sore medicine stimulate the immune system and help remove aphthous stomatitis. Dilute 1-2 drops of echinacea tincture into a glass of filtered water and use the solution as a mouth rinse 2-3 times a day. The problem will be completely eliminated within a couple of days.

Vitamin B complex supplement

B-complex is proven to have a strong impact on the immune system and its’ proper functioning. Daily supplementation of vitamin B-complex is proven to reduce the number and duration of mouth ulcers, while it also helps reduce the painful sensation.

People with B-complex deficiency and recurrent canker sores have dramatic improvements after a course of B-complex intake. The breakouts, the healing time and the number of lesions decreased after their therapy course.


Deglycyrrhizinated licorice or DGL helps heal recurrent canker sores. According to a clinical trial, the treatment period after DGL supplementation decreases and the discomfort, associated with the painful sores, almost disappears, as it helps soothe the irritations. DGL is available in the form of chewable tablets, the treatment period usually lasts only a couple of days.

Aloe Vera

Rinsing the mouth a few times a day with aloe vera juice or applying aloe gel to it 3 times a day helps to restore the damaged, irritated tissues faster and reduces the inflammation.

Aloe Vera Gel: The combination of aloe gel and powdered neem can also be used to treat aphthae in the mouth. Mix 1 teaspoon of aloe vera gel with a pinch of neem powder and apply the so-prepared canker sore treatment directly to the canker sores.

Licorice Tea

The licorice tea contains tannins and glycyrrhizin (glycyrrhizinic acid compounds). The glycyrrhizinic acid may cause elevated blood pressure and lead to fluid retention in the body, therefore there are products in which glycyrrhizin is removed (demyelinated licorice, DGL). The healing ingredients of the root remain in the deglycerized product.

A mixture of deglycerized licorice can be made by dissolving powder in warm water and the resulting mixture is applied to the lesions on the mucous membrane of the oral cavity. Hold this canker sore medicine in the mouth for 2-3 minutes and then spit.


You can also use fresh basil leaves against canker sores – take 2 full handfuls and pour them with a liter of water. Then cook the basil leaves for about 10 minutes, wait for the so-prepared substance to cool and squeeze.

Gargle and rinse your mouth with the basil water. The procedure should be performed at least 4 times a day, without swallowing the liquid canker sore medicine.


Coriander is an unexpected way to cure aphthae. The herb is known for its anti-inflammatory property and is present in many kitchens. Thanks to its strong efficacy, it is considered the best medicine for mouth ulcer in many cultures.

Directions: If you have coriander leaves, boil some of them in 200-250 ml of water. Once the water cools, strain it and gargle with the substance four times a day. If you have coriander seeds, put 1 teaspoon in 200-250 ml water. Leave the liquid for a day, then strain it and gargle four times a day.

Moist Tea Bag

Applying a tea bag to the canker sore provides a rich amount of tannins. The effect will be even better if you use herbal tea with high tannin content such as St. John’s wort, eucalyptus, mint, raspberries, sage.

Tea Tree Oil

10 drops of tea tree oil are placed in a 1/3 cup of water and mixed well. Rinse mouth with the solution.

This mixture has an antiseptic effect, helps heal the aphthae and prevents the secondary infection.

Baking soda

Even if it seems a bit trivial, baking soda is the first choice canker sores medicine, usually available at your kitchen, as it provides a proven immediate relief and reduces the swelling, following canker sore. This is due to the ability of the baking soda to neutralize acidity.

Directions: Combine 1 teaspoon of baking soda with distilled water to get a paste. Stir well and apply to the mouth ulcers with a Q-tip or clean finger. Wait 10 minutes and then rinse your mouth with lukewarm water. Repeat the procedure four times a day.

Salt water rinse

This canker sore treatment method helps to reduce the inflammatory process in the mouth. The first few mouth rinses with salt water will not be your most pleasant experience, but it will quickly reduce the infection and pain.

This is probably the easiest way to remove mouth ulcers, as salt can be found in every kitchen. It is best if you have sea salt or Himalayan salt. Salt canker sore treatment will extract the liquid from the inflamed aphtha, which will help them disappear more quickly.

Directions: Mix half a teaspoon of salt into a quarter cup of warm water. Make a gargle with salt water by holding the liquid on the aphthae. Repeat four times a day.

DIY Canker Sore Treatments
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DIY Canker Sore Treatments
Home remedies to easily eliminate aphthous ulcers within hours!
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About the author

Monika Hristova

Monika is the Editor-in-Chief at SkinPractice. She is a skin care addict and researcher, who feels strongly about helping people with different dermatology conditions from alopecia to warts.

You can read her recommendations and advice both here at SkinPractice or at Quora where she answers skincare-related questions frequently and is the most viewed author in the Skincare category with more than 3 million views or follow her on LinkedIn.

She is also a certified skin care specialist with certification from the Medical College in Sofia.

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