When the tongue coating turns yellow, the first consideration is that there is heat in the body. The darker the yellow, the hotter the body and the more serious the illness.

Those with yellow and thin fur are mostly wind and heat, which may be caused by a cold, which is a superficial disease.

Those with yellow and thick fur are mostly damp-heat resistance; If the fur is yellow and thick and greasy, it belongs to damp-heat in the middle jiao, accompanied by indigestion, abdominal distension, stomach gas rushing up and burping.

Those with yellow and greasy fur and tender tongue fur often stop drinking due to yang deficiency, accompanied by abdominal distension and less urine.

I suggest that you can take some Chinese medicine to treat fire.

For example, Huanglian Shangqing tablets, Huo Qing Gardenia Oatmeal.

You can also buy some Huanglian soaked in water to drink!