Hu Huanglian is consumed internally, either in decoction or in pills or powders. Hu Huanglian belongs to the heat-clearing and blood-cooling (relieving blood heat by clearing heat) medicines in the family Hu Huanglian, which is the dried rhizome of Hu Huanglian, a plant in the family Xuanzanaceae. It is the dried rhizome of Hu Huanglian, a plant in the Xuan Shen family. It enters the liver meridian, stomach meridian and large intestine meridian. It is bitter and cold in flavor. It has the effect of clearing dampness and heat, removing bone vapor and eliminating chancre heat. It can be used both internally and externally. Hu Huanglian is used in the treatment of carbuncle (a kind of poisonous sores, acute suppurative disease occurring on the body surface, limbs and internal organs) sores, headache, dry and itchy skin, pain in the eyebrow bone, red leucorrhoea (abnormal leucorrhoea with blood or blood clots), toothache, nasal abyss (mainly manifested as obscene nasal mucus, with a lot of wiping), intestinal wind hemorrhoidal leakage, cold dampness abdominal pain, scabies, etc. The adverse effects of Hu Huanglian are not yet known. The adverse effects of Hu Huanglian are not clear. Hu Huanglian is bitter and cold in nature, and should not be used by people with spleen and stomach deficiency (spleen and stomach weakness and cold). Pregnant women should not use Hu Huanglian. Hu Huanglian is contraindicated in people with a history of allergy to Hu Huanglian. If necessary, please use under the guidance of a professional Chinese medicine practitioner.