If you often feel feverish in the stomach and intestines, that is to say, you feel burning pain in the epigastrium and abdomen, you can choose to take Huanglian water under the guidance of a Chinese medicine practitioner if it is caused by hyperthermia, and you should not take Huanglian water if it is caused by gastric yin deficiency. Huanglian is bitter in flavor and cold in nature. It belongs to heart, spleen, stomach, liver, gallbladder and large intestine meridians. It can clear heat and dry dampness, diarrhea fire and detoxification. It is used in treating damp-heat plumpness (stomach distension and discomfort), vomiting and acid swallowing (swallowing the acid in the stomach that rushes upward to the mouth and throat), diarrhea, jaundice, high fever and dizziness, excessive fire in the heart, blood-heat epistaxis (due to blood-heat that causes vomiting of blood and nosebleed), redness in the eyes, toothache, thirst, carbuncle and boil; and externally treating eczema, wet sores, and pus in the ear canals. If those who often feel feverish in the stomach and intestines on their own, if it is caused by stomach yin deficiency, they need to take Yi-Stomach Soup under the guidance of the doctor to regulate. It is recommended that patients do not take medication without authorization, so as not to delay the condition.