Aloe Vera Gel Is a Calming Cure for Burning Mouth Syndrome, Aloe Vera Buy Herbal Supplement for Burning Mouth Syndrome. Additionally, it helps cure dry mouth, a potential contributing factor to burning mouth syndrome, while safeguarding the delicate oral tissues.Cut open an aloe vera leaf after giving it a thorough wash. Escape the delicious jail. Put some on your tongue. After 15 to 20 minutes, remove it and rinse with cold water. Repeat daily two or three times. Rinsing with aloe vera juice many times each day is an additional alternative.