Best mouthwash for canker sores

best mouthwash for canker sores | best red light therapy for cold sore

A canker sore, also known as an aphthous ulcer, is a painful and small lesion that appears on the inside of the mouth, usually on the tongue, gums, or inner cheek. It is typically round or oval-shaped, with a white or yellow center and a red border. Canker sores are not contagious and usually heal on their own within one to two weeks, but they can be uncomfortable and make it difficult to eat or talk.

Differences between canker sore and cold sore

Canker sores and cold sores are both types of sores that can occur in or around the mouth, but they have different causes and symptoms.

Canker sores are small, painful ulcers that appear on the inside of the mouth, usually on the tongue, gums, or inner cheek. They are not contagious and are often caused by stress, injury, or certain foods. Canker sores typically have a white or yellow center and a red border and can take up to two weeks to heal.

Cold sores, also known as fever blisters, are caused by the herpes simplex virus (HSV) and are contagious. They appear as clusters of small blisters on or around the lips, and can also occur in the nostrils, chin, or fingers. Cold sores can be painful and usually take one to two weeks to heal, during which time they can be contagious. Unlike canker sores, cold sores tend to recur in the same location.

Active ingredients

Canker sore mouthwashes typically contain active ingredients like hydrogen peroxide, chlorhexidine gluconate, or benzalkonium chloride. These ingredients help to kill bacteria in the mouth and prevent infections, which can worsen canker sores.

Type Description
Best mouthwash canker sore

Hydrogen peroxide: May help kill bacteria by releasing oxygen in the mouth, which alters the environment of anaerobic bacteria. A concentration above 3% is not recommended since it may damage the teeth. 

chlorhexidine | Best mouthwash for canker sore

Chlorhexidine is an antiseptic and disinfectant. It helps reduce the number of germs (bacteria) in your mouth or on your skin. It is a common treatment for mouth infections and denture care and comes most often with local anaesthetic to help numb pain. 

benzalkonium | Best mouthwash for canker sore

Benzalkonium: It is an active ingredient known mainly for its disinfecting and preserving effect. It finds high use after piercing treatment but also in canker sore treatments. Similar to chlorhexidine, this active ingredient is often used in combination with others.

Pain relief and anti-inflammatory agents

Canker sores can be painful, so a mouthwash with pain-relieving properties can help provide relief. Look for a mouthwash that contains benzocaine or menthol, which can help to numb the affected area and reduce pain and discomfort. Furthermore, Anti-inflammatory agents like dexamethasone or hydrocortisone can help reduce inflammation in the mouth and promote healing of the sore. Look for a mouthwash that contains these ingredients to help speed up the healing process.

Tips for buying the best mouthwash for canker sore?

Avoid alcohol-based mouthwashes: Alcohol-based mouthwashes can be too harsh and irritating for people with canker sores. Look for a mouthwash that is alcohol-free to avoid further irritation.

Look for a trusted brand: Choose a mouthwash from a reputable brand with a good track record of producing effective oral care products. This will help ensure that you’re using a quality product that has been thoroughly tested and proven to work.

Best brands of canker sore mouthwashes


Orajel is a popular brand that offers a variety of canker sore treatments, including mouthwashes. Their mouthwashes contain active ingredients like hydrogen peroxide and aloe vera to help promote healing and provide pain relief.

Colgate offers a line of mouthwashes specifically formulated for canker sores. Their mouthwashes contain active ingredients like hydrogen peroxide and sodium bicarbonate to help reduce inflammation and fight infections.

Listerine offers a range of mouthwashes that can be effective for canker sore relief. Their mouthwashes contain active ingredients like eucalyptol and menthol to provide pain relief and reduce inflammation.

Biotene is a brand that specializes in products for dry mouth, which can be a contributing factor to the development of canker sores. Their mouthwashes contain active ingredients like enzymes and proteins to help maintain a healthy oral environment and promote healing of canker sores.

CankerMelts offers a unique canker sore treatment that comes in the form of dissolvable tablets. Their tablets contain active ingredients like licorice root extract and vitamin B12 to help reduce pain and promote healing.

Advantages and disadvantages of mouthwash for canker sore

Final words | Best mouthwash for canker sores

In summary, when shopping for the best mouth rinse for canker sores, look for active ingredients that fight bacteria and prevent infection, pain relief agents to provide comfort, anti-inflammatory agents to promote healing, and choose a trusted brand to ensure quality and effectiveness.

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I'm Sophie, an undergraduate studying Marketing with a keen interest in drugstore products. Through my writing, I explore the vast world of affordable beauty and personal care items. I provide honest reviews and recommendations, guiding readers to discover quality products that fit their budget and enhance their self-care routines.