How Effective Is Baking Soda in Treating Canker Sores, and What Is the Recommended Usage?

Reviewed by Courtney Bloomer, DO

Emergency Medicine

Baking soda can help relieve canker sore pain by neutralizing acids in the mouth. It is typically used as a rinse by mixing it with water.

Explanation

Baking soda, also known as sodium bicarbonate, can be used to help ease the discomfort caused by canker sores. It works by neutralizing acids in the mouth, which can reduce irritation and pain.

How to Use Baking Soda for Canker Sores:

Make a Rinse: Mix one teaspoon of baking soda with half a cup of warm water.
Rinse Your Mouth: Swish the mixture around your mouth for about 30 seconds, then spit it out. Do not swallow the mixture.
Repeat: You can use this rinse several times a day as needed to help with the pain.

It's important to note that while baking soda can help with the pain, it does not cure canker sores. If your canker sores are very painful, last a long time, or keep coming back, you should talk to a healthcare provider.

(References)

MacDonald J. (2002). Canker sore remedies: baking soda. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 11949979.

Tell your friends about us.

We would love to help them too.

For First Time Users

What is Ubie’s Doctor’s Note?

We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.

Not sure about the cause of your current symptoms?

Try our AI-based symptom checker

With an easy 3-min questionnaire, you can get a free AI-powered report on possible causes

Tips to try:

Provide specific, detailed info about all symptoms you have.
Give accurate information about yourself including current conditions.
Answer all follow-up questions

Purpose and positioning of servicesUbie Doctor’s Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.