Recurrent painful canker sores within the mouth (Recurrent aphthous stomatitis, RAS) are a common phenomenon in Primary Medicine (1,2). The term "aphthai" in Greek means a condition within the mouth and is attributed to Hippocrates. (1) RAS is characterized by small, recurrent, painful canker sores in the mouth. These sores have characteristic round or elliptical ulcerations with sharp edges. The sores have a red halo surrounding them and a base with a yellowish or grey color (1,3). Frequency of the phenomenon can be as high as 25% of the general population and the recurrence of the problem can be up to 50% (2).