20 Home Remedies for Canker Sores for Fast Relief

If you've ever had a canker sore, you know the feeling: a small, white ulcer that makes eating, drinking, and even talking a painful ordeal.
While these mouth ulcers are common, the good news is that natural remedies can provide fast relief and speed up the healing process.

But with so many options out there, which ones actually work?

This guide cuts through the noise and brings you 20 natural remedies that combine scientific backing with real-world feedback from people who deal with canker sores regularly.

Whether you're dealing with a painful canker sore on your tongue, searching for pregnancy-safe treatments, wondering why your canker sore isn't healing after 2 weeks, or simply looking for home remedies that don't burn, this guide has you covered.

Natural remedies for mouth ulcers

Mouth ulcers, also known as canker sores or aphthous ulcers, can be uncomfortable and painful.
Fortunately, there are several natural remedies that can help alleviate symptoms and promote healing.

What follows is a curated list of remedies that have stood the test of time. Some passed down through generations, others backed by clinical research.
Each entry includes practical application tips and, where relevant, insights from people who have tried them.

1. Salt water rinse for canker sores

Salt water rinses create an alkaline environment in the mouth, which helps to neutralize acids and reduce inflammation.
The salt also acts as a natural antiseptic, preventing bacterial growth and promoting healing of mouth ulcers.

Many people find this is one of the most effective home remedies for canker sores that don't burn.
Users report that it "cleans the area" and "reduces pain within minutes."
It's also considered safe during pregnancy, a common concern for expectant mothers dealing with hormonal flare-ups.

• Dissolve a teaspoon of salt in warm water and rinse your mouth several times a day, especially after meals.

2. Honey

Honey possesses natural antibacterial and anti-inflammatory properties.
It forms a protective barrier over the ulcer, reducing pain and preventing further irritation.
Additionally, honey contains enzymes that stimulate tissue repair, accelerating the healing process.

Manuka honey is particularly effective, according to many users.
One person shared: "I apply Manuka honey directly on the sore before bed. By morning, the pain has decreased by 80%."

• Apply raw honey directly onto the ulcer 2-3 times daily.

3. Coconut oil

Coconut oil contains lauric acid, which has antimicrobial properties that can help combat bacteria responsible for mouth ulcers.
Swishing coconut oil in the mouth also moisturizes the affected area, soothing discomfort and promoting tissue repair.

Users describe it as a "gentle and soothing" remedy.
One person noted: "I do a 10-minute coconut oil pull. It doesn't heal instantly, but it eases the discomfort significantly."

• Swish a tablespoon of coconut oil in your mouth for a few minutes (oil pulling), then spit it out.

4. Aloe Vera gel

Aloe vera gel is well-known for its soothing and healing properties.
It contains compounds such as acemannan that have anti-inflammatory and wound-healing effects.
Applying aloe vera gel to mouth ulcers can reduce pain, inflammation, and promote faster healing.

This remedy is especially effective for canker sores on the tongue.
Users report: "I applied aloe vera gel directly to a sore on the tip of my tongue. The burning sensation disappeared within 5 minutes."

• Apply fresh aloe vera gel directly onto the ulcer.

5. Licorice Root

Licorice root contains glycyrrhizin and glycyrrhizic acid, which have potent anti-inflammatory and antimicrobial properties.
Chewing licorice root or applying its powder onto mouth ulcers can reduce pain, inflammation, and inhibit bacterial growth, facilitating healing.

Though less known, this traditional remedy has its fans.
One user shared: "I chew a piece of licorice root and hold it against the sore. The soothing effect is quick."

• Chew on a small piece of licorice root or apply licorice root powder directly onto the ulcer.

6. Turmeric Paste

Turmeric contains curcumin, a compound with powerful anti-inflammatory and antioxidant properties.
Applying turmeric paste to mouth ulcers can alleviate pain, reduce inflammation, and promote tissue regeneration, expediting the healing process.

This remedy is particularly valued by those familiar with Ayurvedic medicine.

• Mix turmeric powder with water to form a paste and apply it directly onto the ulcer.

7. Chamomile Tea

Chamomile tea contains bisabolol and chamazulene, which have anti-inflammatory and antimicrobial properties.
Rinsing the mouth with chamomile tea can reduce pain, inflammation, and prevent bacterial infections, aiding in the healing of mouth ulcers.

This gentle remedy is popular among parents.
One mother shared: "My child has recurrent canker sores and I rinse his mouth with cooled chamomile tea. It calms him immediately."

• Rinse your mouth with cooled chamomile tea several times a day.

8. Clove oil

Clove oil contains eugenol, a compound with natural anesthetic and antimicrobial properties.
Applying clove oil to mouth ulcers can provide immediate pain relief, reduce inflammation, and accelerate healing by preventing bacterial growth.

This is widely considered one of the fastest ways to get rid of canker sore pain.
Users describe it as "magical but it stings at first."

• Apply clove oil directly onto the ulcer using a cotton swab.
  Caution: Use sparingly - a single drop is enough. Do not swallow.

9. Apple Cider Vinegar

Apple cider vinegar has acidic properties that create an inhospitable environment for bacteria. Using it as a mouthwash can help to disinfect mouth ulcers, reduce pain, and promote faster healing by removing harmful microorganisms.

However, this remedy divides opinion.
If you're looking for home remedies for canker sores that don't burn, you may want to skip this one.
One user warned: "I tried diluted apple cider vinegar. It burns like hell. I don't recommend it if you're looking for gentle remedies."
Another countered: "It worked for me but the initial pain is intense."

• Mix equal parts of apple cider vinegar and water and use it as a mouthwash.
  If you experience burning, discontinue use.

10. Baking Soda Paste

Baking soda, also known as sodium bicarbonate, has alkaline properties that neutralize acids and create an environment unfavorable for bacterial growth.
Applying baking soda paste to mouth ulcers can reduce pain, inflammation, and promote healing.

Users recommend this as a gentler alternative to salt.
One person noted: "Baking soda paste is less irritating than salt and seems to speed up healing."

• Mix baking soda with water to form a paste and apply it directly onto the ulcer.

11. Tea Tree oil

Tea tree oil possesses potent antimicrobial properties due to its high concentration of terpinen-4-ol.
Applying diluted tea tree oil to mouth ulcers can kill bacteria, reduce inflammation, and accelerate healing without causing irritation.

Users emphasize the importance of dilution: "A drop of diluted tea tree oil on a cotton swab. It disinfects well but you must dilute it absolutely."
Never swallow tea tree oil.

• Dilute tea tree oil with water and apply it directly onto the ulcer.

12. Peppermint oil

Peppermint oil contains menthol, which has cooling and numbing effects that provide immediate pain relief.
Additionally, peppermint oil has antimicrobial properties that can help prevent infection and promote healing of mouth ulcers.

Users appreciate the refreshing effect: "Peppermint oil is gentler than clove oil and provides an immediate cooling sensation."

• Apply a drop of peppermint oil directly onto the ulcer.

13. Yogurt

Yogurt contains probiotics, such as Lactobacillus acidophilus, which help restore the balance of good bacteria in the mouth.
Consuming yogurt with live cultures can enhance oral health, reduce inflammation, and promote healing of mouth ulcers.

This is especially helpful if your canker sores are linked to stress or a weakened immune system.

• Consume plain yogurt with live cultures daily.

14. Vitamin E oil

Vitamin E is a powerful antioxidant that protects cells from damage caused by free radicals.
Applying vitamin E oil to mouth ulcers can promote tissue repair, reduce inflammation, and accelerate healing, leaving behind healthier oral mucosa.

Users looking for a gentle remedy appreciate this option: "I pierced a vitamin E capsule and applied the oil to the sore. Healing was faster than usual."

• Apply vitamin E oil directly onto the ulcer.

15. Green Tea

Green tea contains catechins, which have anti-inflammatory and antioxidant properties.
Rinsing the mouth with green tea can reduce pain, inflammation, and prevent bacterial infections, facilitating the healing of mouth ulcers.

This remedy is particularly appreciated by those dealing with natural remedies for mouth ulcers caused by stress.

• Rinse your mouth with cooled green tea.

16. Ginger

Ginger contains gingerol, a compound with potent anti-inflammatory and analgesic properties.
Chewing ginger or drinking ginger tea can reduce pain, inflammation, and promote healing of mouth ulcers by inhibiting inflammatory pathways.

• Chew on a small piece of fresh ginger or drink ginger tea.

17. Cayenne Pepper

Cayenne pepper contains capsaicin, a natural compound that desensitizes nerve endings, providing pain relief.
Additionally, capsaicin stimulates blood flow to the affected area, promoting tissue repair and accelerating healing of mouth ulcers.

This is a radical remedy mentioned by some users.
But one person warned: "It burns intensely at first, but after 30 seconds, the pain disappears completely. Guaranteed effect but not for the faint-hearted."
Use with caution.

• Mix a pinch of cayenne pepper with water to form a paste and apply it onto the ulcer.

18. Hydrogen Peroxide Rinse

Hydrogen peroxide has strong antiseptic properties that can help disinfect mouth ulcers and prevent bacterial infections.
Using hydrogen peroxide as a mouthwash can reduce pain, inflammation, and promote faster healing of mouth ulcers.

Users recommend using a diluted commercial mouthwash like Colgate Peroxyl rather than pure hydrogen peroxide.

• Dilute hydrogen peroxide with water (1:1 ratio) and use it as a mouthwash. Do not swallow.

19. Propolis

Propolis is a resinous substance produced by bees that has powerful antimicrobial and anti-inflammatory properties.
Applying propolis tincture to mouth ulcers can inhibit bacterial growth, reduce inflammation, and accelerate tissue repair, facilitating healing.

This remedy has gained popularity on forums: "50% propolis tincture is amazing. It forms a protective barrier and the pain disappears for hours. But be careful if you're allergic to bee products."

• Apply propolis tincture directly onto the ulcer.

20. Stay hydrated

Staying hydrated is essential for maintaining optimal oral health and promoting healing of mouth ulcers.
Adequate hydration helps to keep the mucous membranes in the mouth moist, preventing dryness and discomfort, and supports the body's natural healing processes.

Users often mention hydration as a key preventive factor.

• Drink plenty of water throughout the day.

Quick comparison: which natural remedy works best for you?

Based on user feedback and scientific data, here's a comparison table to help you choose the right remedy for your situation:

How to make natural canker sore relief gel

Making your own natural canker sore relief gel is easy and cost-effective.
This recipe combines three of the most highly-rated remedies: aloe vera, honey, and clove oil.

This gel combines aloe vera's healing properties, honey's antibacterial action, and clove oil's numbing effect for fast relief.

Best supplements for managing canker sores on the tongue

Supplements can play a crucial role in reducing the frequency of canker sores.
If you suffer from recurrent canker sores, a deficiency in certain vitamins and minerals may be the culprit.

Among long-time sufferers, the top recommendations for prevention are L-lysine and B-complex vitamins.

Folic acid for canker sores

Folic acid, also known as vitamin B9, is essential for cell growth and division, making it crucial for maintaining healthy tissues, including those in the mouth.
Frequent canker sores may be linked to a folic acid deficiency.

• Dosage: Take 400 to 800 micrograms of folic acid daily.

Zinc

Zinc plays a vital role in immune function, wound healing, and tissue repair.
Zinc deficiency can impair immune responses, making individuals more susceptible to infections, including canker sores.
Supplementing with zinc boosts the immune system and significantly reduces the recurrence of canker sores.

• Dosage: Take 15 to 30 milligrams of zinc daily.

Vitamin B12

Vitamin B12 is essential for nerve function, DNA synthesis, and red blood cell formation.
Deficiency in vitamin B12 can lead to various neurological and hematological disorders, as well as oral manifestations such as canker sores.
Supplementing with vitamin B12 can help address this deficiency and reduce the occurrence of canker sores on the tongue.

• Dosage: Take 1,000 micrograms of vitamin B12 daily.

Vitamin C

Vitamin C, also known as ascorbic acid, is a potent antioxidant that plays a critical role in immune function and collagen synthesis.
Collagen is essential for maintaining the integrity of the oral mucosa and supporting tissue repair.

• Dosage: Take 500 to 1,000 milligrams of vitamin C daily.

L-Lysine

L-lysine is an essential amino acid that many users report significantly reduces canker sore frequency.
While more studied for herpes, numerous testimonials report its effectiveness for canker sores as well.

• Dosage: 500 to 1,000 mg daily for prevention, 3,000 mg during flare-ups (consult a professional).

Can you pop a canker sore?

No. Popping, picking, or squeezing a canker sore is one of the worst things you can do.
Unlike a pimple, a canker sore is an open ulcer, not a blocked pore.

Picking at it will:

• Increase inflammation - trauma to the area makes the sore larger and more painful
• Delay healing - interfering with the natural healing process prolongs recovery
• Increase infection risk - introducing bacteria from your fingers can lead to secondary infection
• Cause scarring - repeated trauma can leave permanent tissue damage

The white or yellowish film you see in the center of a canker sore is fibrin, a protective layer that forms naturally to shield the underlying tissue while it heals.
This layer is not pus and should not be removed.
Let the sore heal on its own with the help of natural remedies to soothe pain and speed recovery, and it will typically resolve within 7 to 14 days.

Common causes of canker sores

Three causes come up repeatedly in user discussions: stress, nutritional deficiencies (B12, iron, zinc), and toothpaste containing SLS (sodium lauryl sulfate).
"I switched to an SLS-free toothpaste and my canker sores decreased by 90%" is a testimony that appears constantly.

Canker sores can be triggered by various factors:

• Oral trauma - accidental biting, dental work, or brushing too hard
• Hormonal changes related to the menstrual cycle
• Stress - one of the most common triggers
• Certain foods like oilseeds, chocolate, coffee, tomatoes, and acidic fruits.
  If you're wondering what foods trigger canker sores, these are the main culprits
• Deficiencies in iron, vitamin B12, zinc, or folic acid
• Quitting smoking
• Weakened immune system
• Medications such as beta-blockers and anti-inflammatories
• Chronic diseases (e.g., inflammatory bowel disease, Behçet's disease)
• Genetic predisposition
• Toothpaste containing sodium lauryl sulfate (SLS) - the most frequently cited factor on forums

Keeping a food diary can help you identify your personal triggers.

Stress and canker sores: what's the link?

Can stress cause canker sores?

Yes. Many people report that their canker sores appear during or after periods of high stress.

Stress is thought to increase inflammation in the body, weaken the immune system, and make the oral mucosa more susceptible to ulcers.
Managing stress through relaxation techniques, regular exercise, and adequate sleep may help reduce the frequency of stress-related canker sores.

Managing the progression of canker sores

Most canker sores heal naturally within 10 to 14 days.
However, certain actions can exacerbate the inflammation, such as consuming spicy foods, acidic drinks, or excessive vinegar in salads.

To aid the healing process, it is essential to adopt gentle oral care practices, including using a soft or medium toothbrush and avoiding toothpaste containing sodium lauryl sulfate.
Many people report that switching to an SLS-free toothpaste significantly reduces the frequency of their canker sores.

Additionally, managing stress levels and being mindful of medication side effects can contribute to faster recovery.
If your canker sore isn't healing after 2 weeks, or if it's unusually large or painful, consult a healthcare professional.

How to prevent canker sores naturally

Prevention is often the best medicine.
If you suffer from recurrent canker sores, here are the most effective preventive measures recommended by users and health professionals:

• Switch to an SLS-free toothpaste - this is the n°1 recommendation from long-time sufferers
• Take supplements - vitamin B12, zinc, folic acid, and L-lysine
• Manage stress through meditation, exercise, or therapy
• Avoid trigger foods - acidic fruits, tomatoes, coffee, chocolate, and nuts
• Stay hydrated - drink at least 2 liters of water daily
• Use a soft-bristled toothbrush to avoid oral trauma
• Get enough sleep to support immune function

Canker sore warnings: what to avoid

Based on user experiences, here are the mistakes to avoid and precautions to take:

• Don't apply pure essential oils without dilution - Tea tree oil and clove oil can burn tissue if not diluted.
• Avoid apple cider vinegar if you have sensitive skin - many users report intense pain.
• Watch for allergies - propolis is not recommended for people allergic to bee products.
• See a doctor if the sore persists for more than 2 weeks - this could be a sign of a more serious condition.

How to cure mouth ulcers fast naturally

Dealing with mouth ulcers and canker sores can be uncomfortable, but natural remedies offer effective solutions for relief and healing.
By incorporating these remedies into your daily routine, you can alleviate pain, reduce inflammation, and promote faster healing, all while improving your overall oral health.

Whether you're looking for home remedies for canker sores on the tongue, natural treatments that don't burn, or supplements to prevent future outbreaks, the solutions above cover all your needs.

For the fastest relief, start with the 30-second guide at the top of this article.

So why wait? Try these natural remedies today and experience the benefits for yourself!

Related: 30 Natural Remedies for Tooth Infection (Fast Relief)

FAQ: Canker sores – Your questions

What is the white stuff in a canker sore?

The white or yellowish substance often seen in the center of a canker sore is called fibrin, which is a protein involved in the clotting process.
It forms as a protective layer over the ulcerated area.

Why do canker sores hurt so bad?

Canker sores can be particularly painful due to inflammation and irritation of the sensitive nerve endings in the affected area.
Factors such as acidic or spicy foods, trauma, and stress can exacerbate the pain.

How long does a canker sore last?

Canker sores typically last for about 7 to 10 days, although the duration may vary depending on factors such as size, location, and individual healing capabilities.
Larger or more severe sores may take up to 14 days to heal.

How to get rid of a canker sore fast?

While there is no instant cure for canker sores, several remedies can help alleviate symptoms and promote faster healing.
These include topical treatments (clove oil, honey), mouth rinses (saltwater, chamomile tea), and dietary adjustments aimed at reducing irritation and inflammation.

Does mouthwash help canker sores?

Certain mouthwashes containing antimicrobial or soothing ingredients may help alleviate discomfort associated with canker sores and promote healing.
However, it's essential to choose a mouthwash that is alcohol-free and specifically formulated for oral ulcer relief.

What are the best home remedies for canker sores in the mouth?

The most effective home remedies for canker sores are:

• Saltwater rinse → 1 teaspoon salt in warm water, rinse several times daily
• Honey → Apply directly to the sore for its antibacterial and soothing properties
• Coconut oil → Swish in mouth for a few minutes to moisturize and soothe
• Clove oil → Apply a drop with a cotton swab for numbing pain relief
• Propolis → Apply tincture for a protective barrier and lasting relief

Does stress cause canker sores?

Yes, stress is a well-known trigger for canker sores.
Managing stress through relaxation techniques, exercise, and adequate sleep can help reduce outbreaks.

What vitamins prevent canker sores?

Vitamins B12, B9 (folic acid), C, and minerals like zinc and L-lysine are essential for preventing canker sores.
Deficiencies in these nutrients are often linked to recurrent outbreaks.

When should I see a doctor for a canker sore?

Consult a healthcare professional if your canker sore:

• Lasts more than 2 weeks
• Is unusually large or painful
• Is accompanied by fever or difficulty swallowing
• Keeps coming back frequently

What is the difference between a canker sore and a cold sore?

Canker sores (aphthous ulcers) appear inside the mouth, are not contagious, and are not caused by a virus.
Cold sores (fever blisters) appear on or around the lips, are caused by the herpes simplex virus, and are highly contagious.

Does toothpaste cause canker sores?

Yes, according to many user experiences. Sodium lauryl sulfate (SLS) in many toothpastes is a known irritant that can trigger canker sores in sensitive individuals.
Switching to an SLS-free toothpaste is one of the most frequently recommended solutions.

How to heal a canker sore overnight?

While complete overnight healing is unlikely, you can significantly reduce pain and speed up healing by applying honey or aloe vera before bed, using a saltwater rinse, and taking L-lysine supplements.

Is apple cider vinegar good for canker sores?

Apple cider vinegar has antibacterial properties, but it can cause a burning sensation.
If you're looking for home remedies for canker sores that don't burn, consider honey or aloe vera instead.
If you use ACV, always dilute it with water.

* Updated: August 2026