The contraindications of dry ginger and gardenia boiled together in water are not yet clear. Dried ginger has the effects of warming the middle and dispersing cold (dispelling cold with medicine that warms the spleen and stomach), returning yang to the veins, and warming the lungs to dissolve drinks (facilitating the flow of stagnant fluids by warming the lungs). It is mainly used for treating cold pain in the epigastrium (feeling cold pain in the stomach and abdomen), vomiting, diarrhea, and dead-yang syncope (unconsciousness, accompanied by cold limbs, even to the elbows and above the knees). Those who have Yin deficiency and internal heat, blood heat are forbidden to take dry ginger. Gardenia has the efficacy of diarrhea of fire and removing vexation, clearing heat and inducing dampness (removing heat and dampness in the body), cooling blood and detoxifying (referring to the treatment of blood-heat and toxicity). It is used for treating heat disease, damp-heat jaundice, hematemesis (the appearance of blood in urine accompanied by pain), astringent pain, epistaxis (vomiting of blood and nosebleed due to blood-heat), redness and swelling of the eyes, and fire-poisonous sores and ulcers. Yin and blood deficiency, spleen deficiency loose stools (feces thin not shaped) should not use gardenia. After dry ginger and gardenia boiled together with water to drink, if there is any discomfort, it is recommended to stop using it in time, and consult a doctor in time.