Chikuang Cao, also known as Tianhuaner, has the effects of clearing heat and removing dampness (removing heat and dampness from the body), detoxifying and eliminating swellings, and is mainly used to treat jaundice, shingles, dysentery, carbuncle, swollen sores and poisons, oedema, swollen throats, gonorrhea, cataracts of the eyes, and bruises. Chiguangcao belongs to the heat-clearing and detoxifying (removing heat and toxicity from the body) medicines in the heat-clearing medicines, which are the whole grass of the Umbelliferae plant Tianhoucai and Broken Copperhead. It enters the liver meridian and kidney meridian, with pungent, bitter flavor and cool nature, and can be taken internally or used externally. It is bitter and cold in nature, and should be used with caution for those who have a weak and cold spleen and stomach (spleen and stomach weak and cold). Adverse effects of Chiguangcao are not clear, and it is contraindicated for those with a history of allergy. If needed, please use it under the guidance of a professional Chinese medicine practitioner, and should not be used on its own to avoid adverse effects.