The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
In Chinese Medicine tongue ulcers can be treated by one herbs that we have on record. Here is the list below.
Common rush might help with tongue ulcers
Why might Common Rush (Deng Xin Cao) help with tongue ulcers?
Because it is a herb specifically indicated to treat tongue ulcers as can be seen on Common Rush's page.
Common Rush is a Cold herb that tastes Sweet. It targets the Heart, the Lung and the Small intestine.
Its main actions are: Diuretic, promotes urination. Clears urinary tract infections.
Other symptoms often associated with tongue ulcers
Urinary tract infection Sore throat Oliguria Mouth ulcers Scanty urination Insomnia Restlessness