Patient Comments: Canker Sores - Topical Medications

What topical medications have been effective treatments for your canker sores?

Comment from: Sandy, 55-64 Female (Patient) Published: November 01

I was getting canker sores every month for years. They are terribly painful and sometimes mine would last weeks. Chocolate and coffee aggravated them. Also stress. I tried hydrogen peroxide and that irritated it more. This had nothing to do with canker sores, but my doctor put me on hormones due to zero estrogen levels. A few weeks later I realized the canker sores had disappeared. Maybe twice a year I will get one from chocolate, but even then it is a small one that never lasts. Such a relief to finally get rid of them.

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Comment from: The sufferer, 19-24 (Patient) Published: April 16

I use alum powder on my canker sores when I can, it really only works when you can reach at the sores in your mouth. Do not swish around in your mouth, it tastes exactly like bile. I find it works best when you put the alum directly on to the sore, then put some of the canker medication that's like a gel and it essentially holds the alum in place drying out the sore. Best to do it before bed overnight and it may sting the next day so I just put the gel on to soothe it then do the same thing with the alum the following night.

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Comment from: jj13u, 35-44 Female (Patient) Published: August 26

I just wanted to share my story, and hopefully will help someone. I religiously drank Bigelow Earl Grey tea from the age of 15. I suffered from canker sores from childhood, but around the same age, my canker sores increased. Doctors attributed the increased sores to puberty. They would last for 2 weeks plus and be so large or so many that I would fake 'no voice' so I wouldn't have to speak, because it would be so painful. Finally at age 34, I decided to eliminate sugar from my diet and my tea drinking ceased, as did my canker sores. Eventually I returned to sugar and drinking tea and the sores returned. It took several times back and forth before I realized that it might be the bergamot oil in the tea that might be an irritant. I can drink other Bigelow black teas without issue. I can still get a canker sore from trauma, if I bite my lip, but it only lasts a few days and does not cause as much pain.

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Comment from: Rosesting1967, 7-12 Female (Caregiver) Published: October 08

My daughter had a couple of canker sores and we used custard powder to heal it. In two days it was gone. I tried straight baking soda, which burned her too much, but she loved the custard powder. It worked to heal and soothe the pain.

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Comment from: balx23, 35-44 Female (Patient) Published: March 10

I have a canker sore on the side of my tongue (I've always called them ulcers, whatever anyone wants to call them, they are annoying and hurt to say the least). I am very curious what remedy works the fastest.

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Comment from: kofta, 45-54 Female Published: February 04

Eat one or two granny smith apples. Hold the pulp of the apple when it's in your mouth against the painful part of where the sore is (mine is always on the edges of the tongue). It almost instantly takes away the pain. Eat the apple when the pain just starts.

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Comment from: Modiri, 35-44 Male (Patient) Published: January 18

Taking Metrol pills & avoiding toothpaste with Sodium Lauryl Sulfate (SLS).

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Comment from: 55-64 Male (Patient) Published: December 26

I found that if you apply Alum directly to the canker sore inside your mouth before bedtime it will usually disappear overnight. Alum is a mineral used in cooking and pickling.

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Patient Comments

Viewers share their comments

Canker Sores - Effective Treatments Question: Please describe what treatments have been effective for your canker sores.
Canker Sores - Symptoms Question: What were the symptoms of your canker sores?
Canker Sores - Oral Medications Question: Which medications have you tried for pain or to treat your canker sores? What would you recommend?
Canker Sores - Experience Question: Please describe your experience with canker sores.

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