Huang Lian has the effects of clearing heat and drying dampness, diarrhea and detoxification, and is used in conditions such as damp-heat lumpiness (stomach distension and discomfort), vomiting and acid swallowing (swallowing the acid in the stomach that rushes up to the oropharynx), diarrhea, jaundice, and other conditions.
Huang Lian, bitter in flavor and cold in nature, belongs to the heart, spleen, stomach, liver, gallbladder and large intestine meridians. Clinically, it is used in treating high fever and dizziness, excessive fire in the heart, restlessness and insomnia (symptoms of irritability and heat in the heart, insomnia), palpitations, blood-heat epistaxis (vomiting of blood due to blood-heat, nosebleed), redness of the eyes, toothache, thirst, carbuncle and furuncle; and externally treating eczema, eczema, pus in ear canals.
Coptis chinensis is good at clearing fire-heat in the upper burner and is used for treating eye bleed and mouth sores; Coptis chinensis is used for clearing the stomach, harmonizing the stomach and stopping vomiting, for treating cold-heat interlocks, damp-heat obstruction (where dampness and heat gather to form a stagnant blockage), plumping and vomiting; Coptis chinensis is used for dredging up the liver and harmonizing the stomach and stopping vomiting, for treating liver-stomach disharmony and vomiting, and for swallowing acid.
However, it should be noted that stomach deficiency and vomiting, spleen deficiency and diarrhea, and kidney diarrhea should be taken with caution. If medication is needed, it is recommended to consult a professional Chinese medicine practitioner, do not self-medicate, in order to avoid adverse consequences.