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Milk of Magnesia for Canker Sores


Canker sores will usually go away on their own in a week or two. But if they are very painful or cause a burning or tingling sensation, treating the sore or sores with Milk of Magnesia can provide some relief.

Using Milk of Magnesia to Treat Canker Sores


  • Use a cotton swab to dab Milk of Magnesia directly on the canker sore.

Why It Works

Milk of Magnesia is very soothing to irritated skin in general. It can also be used to treat sunburn, acne, and insect bites.


If your canker sore lasts longer than two weeks, see a doctor to rule out possible infection or cancer. Also, be sure to check with your doctor if the canker sore is accompanied by other symptoms, such as fever, diarrhea, headache, or a skin rash.

More Remedies

Sambucol can be purchased at

Sambucol can be purchased at many health food stores and works very well. I have had cold sores all my life and this is the only thing that has worked. I have tried Lysine, blistex, abreva, and everything on the shelves in stores!

Just take 2 tsp about 2X the first day you feel the tingling in your lip and you won't get the cold sore.


This information is solely for informational and educational purposes only. The publication of this information does not constitute the practice of medicine, and this information does not replace the advice of your physician or other health care provider. Neither the owners or employees of or the author(s) of site content take responsibility for any possible consequences from any treatment, procedure, exercise, dietary modification, action or application of medication which results from reading this site. Be aware that many of the techniques and remedies published on this site have not been evaluated in scientific studies. Often, only limited information is available about their safety and effectiveness. Use of these remedies in connection with other medications can cause severe adverse reactions. It is always best to speak with your primary health care provider before engaging in any form of self treatment. Additional information contained in our Legal Statement

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