1, efficacy of clearing heat and drying dampness, clearing the heart to remove annoyance, clearing the stomach to stop vomiting, diarrhea and detoxification. The main treatment of dampness and heat evidence, fever, stomach fever and vomiting, carbuncle, sores and poison, fever and high fever.

2. Huanglian is a famous heat-clearing medicine, but it can only be used for the actual heat, if the blood deficiency postpartum heat, or lack of qi, the heat of the yin fire should not be used. Huanglian is suitable for diarrhea of actual heat, but not for those who have a deficiency of yin and a high level of heat, or those who are suffering from fluid damage and fever. Huanglian is bitter and dry, easily injuring the fluid, so it should be avoided in patients with dry mouth and tongue, dry pharynx, disturbed sleeplessness, night sweating, thin and numb pulse, red tongue and little moss, as well as those with low fever in the late stage of febrile diseases with depletion of qi and yin. If you do need to use it, you should use it in small dosages, while the disease is still in progress, and you should not take it for a long time.