Thick and white tongue coating is mostly caused by dampness and internal syndrome, you can take Gentian Diarrhea Liver Pills under the guidance of doctor. Gentian Diarrhea Liver Pill has the effect of clearing the liver and gallbladder and inducing dampness and heat, and is often used in the treatment of dizziness, redness of the eyes, ringing in the ears, deafness, bitter taste in the mouth, and dystocia (pain in the area of the ribs and coats of the chest), etc., which are caused by the internal growth of dampness and phlegm. Note that this product is forbidden to those who are allergic to this product, allergic people should be cautious, weak spleen and stomach should not be taken for a long time, pregnant women and people with stomach cold should be cautious. From the above, it can be seen that people with white thick tongue can take Gentian Liver Disease Pills under the guidance of a doctor. In addition, people with thick and white tongue coating can also be treated by taking other medicines. For example, if the tongue is thick and greasy, it is mostly caused by dampness and turbidity or food accumulation (the accumulation of poorly digested food in the stomach), which can be treated with Ganlu Sterilizing Dan and Er Chen Tang; if the tongue is thick and dry, it is caused by dampness and heat, which can be treated with San Ren Tang. The use of drugs should be under the guidance of a doctor, and should not be used blindly on one’s own.