Apthous ulcers.


Dr. said this would go away on it's own. Had since last summer. Is now in my throat and up to 6 ulcers at a time.  Especially at the tip of my tongue.  Hard to eat.  A friend suggested probiotics because it comes from the stomach.  If he is correct, could you recommend which one I should take?



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Probiotics may help. Here is a reference guide to the best by indication. Clinically, I've had good success with formulas that contain BLIS K12 and M18. I would also normally recommend sublingual vitamin B12 at 1000 mcg daily. 

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Here is some more general information...

Pain caused by canker sores can make it difficult to eat, drink, or speak. How can you soothe the pain and shorten the healing time? According to research or other evidence, the following self-care steps may be helpful.
  • Aim for more balanced nutrition

    Not getting the right amounts of certain vitamins can contribute to canker sores; take a multivitamin containing zinc and generous amounts of vitamin B-complex, and include iron if tests show that your levels are low

  • Try a little licorice

    Try chewable (or powdered) deglycyrrhizinated licorice (DGL) to shorten canker sore healing time

  • Make a date with your dentist

    Get checked for sources of minor trauma, such as rough fillings, braces, or poorly fitting dentures, which can aggravate canker sores

  • Forego certain foods

    Work with a knowledgeable health professional to find out if you’re sensitive to foods that make symptoms worse

About This Condition

Canker sores are small ulcerations within the mouth akaaphthous stomatitis.


Canker sores appear alone or in clusters as shallow, painful erosions in the mucous membrane inside the mouth. They typically have slightly raised, yellowish borders surrounded by a red zone, and are sometimes covered with a yellowish opaque material. Fatigue, fever, and swollen lymph nodes may be present in severe attacks.

Healthy Lifestyle Tips

Minor trauma from poor-fitting dentures, rough fillings, or braces can aggravate canker sores and should be remedied by a dentist.

Several reports have found sodium lauryl sulfate (SLS), a component of some toothpastes, to be a potential cause of canker sores.1 In one trial, most recurrent canker sores were eliminated just by avoiding toothpaste containing SLS for three months.2 Positive effects of eliminating SLS have been confirmed in double-blind research.3 SLS is thought to increase the risk of canker sores by removing a protective coating (mucin) in the mouth. People with recurrent canker sores should use an SLS-free toothpaste for several months to see if such a change helps.

Measurements of stress were associated with recurrent canker sores in one preliminary study,4 but not in another.5 More research is needed to determine whether stress reduction techniques might reduce canker sore recurrences.


1. Chanine L, Sempson N, Wagoner C. The effect of sodium lauryl sulfate on recurrent aphthous ulcers: a clinical study. Compend Contin Educ Dent 1997;18:1238-40.

2. Herlosfson BB, Barkvoll P. Sodium lauryl sulfate and recurrent aphthous ulcers. A preliminary trial. Acta Odontol Scand1994;52:257-9.

3. Herlosfson BB, Barkvoll P. The effect of two toothpaste detergents on the frequency of recurrent aphthous ulcers. Acta Odontol Scand 1996;54:150-3.

4. McCartan BE, Lamey PJ, Wallace AM. Salivary cortisol and anxiety in recurrent aphthous stomatitis. J Oral Pathol Med1996;25:357-9.

5. Pedersen A. Psychologic stress and recurrent aphthous ulceration. J Oral Pathol Med 1989;18:119-22.

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