A lot of people suffer with ulcers in their mouths on a regular basis. A clinical trial reported in the Journal of Evidence Based Dentistry (10/2009) showed that 75% of those with chronic mouth ulcers were free of ulcers for 6 months when given 1000ug of vit. B12 dissolved under the tongue at bed time. 33% of the placebo group had similar results. My opinion is that if you were to try this you could probably try the B12 less frequently… once or twice a week. Tablets that dissolve under the tongue are important, because many people, especially women, lose the ability to absorb B12 in the stomach/intestines. Please contact me if you want to discuss further, as there is a lot more to this topic…www.levy hoffman.com.