Taste: bitter, cold.
Channel tropism: channel tropism of heart, spleen, stomach, liver, gallbladder and large intestine.
Efficacy: clearing away heat and dampness, purging fire and detoxifying.
Indications: Damp heat, fullness, vomiting, acid swallowing, diarrhea, jaundice, high fever, dizziness, hyperactivity of heart fire, restlessness, palpitation, blood heat, vomiting, redness of eyes, toothache, thirst, carbuncle and sore; External treatment of eczema, wet sores, ear abscess.

Effect:

Rhizoma Coptidis is a very commonly used Chinese medicine in clinic. Its efficacy is to clear away heat and toxin, dry dampness and stop diarrhea. Because Coptis is mainly into the human heart, spleen and stomach, as well as the large intestine, so in clinical use, it is mainly for the above organs. For example:
First, excessive heart fire, restlessness at night caused by irritability, difficult to sleep.
Second, for the spleen and stomach heat caused by gingival swelling and pain, sore mouth and tongue, swallowing acid is spitting acid water and other such problems.
Third, for diarrhea, dysentery caused by intestinal damp heat, the nature of the stool is more foul, or pus and blood and other problems can be used Coptis, but Coptis because of bitter taste, for the spleen and stomach Yang Qi is a certain hindrance, so Coptis should be used in combination with other drugs.