Cinnamon shells, also known as longan shells, is a kind of traditional Chinese medicine, for the Sapindaceae longan plant longan fruit skin. It has the efficacy of dispelling wind and detoxification, astringent sores and muscle growth, and the use of boiled water has the effect of improving vertigo and deafness, poisonous sores that do not heal for a long time, and burns. Longan shell color is yellow, cinnamon shell into medicine, need to wash off the outer yellow. When the patient feels the external wind evil, resulting in stagnation of wind in the internal and external, meridian and internal organs, it can be relieved by boiling longan shell with water. Longan shell boiled in water is also effective in vertigo and deafness. In addition, washing carbuncles with water boiled in longan shells can help improve the condition. It is important to note clinically that the effective dosage of the traditional herbal tea substitute is limited and its effects are relatively limited. In addition, the adverse effects and contraindications of the drug are not known. If you need to use Longan Shell, you need to be instructed by a doctor and should not use it without authorization.