Peppermint in water to take the mint into a cup, using hot water, cover the cup soak for 5 minutes after taking, helps to clear the head and eyes, clear the throat, evacuate wind-heat, liver and qi. However, it should be noted that the active ingredients of the drug soaked in water are limited to precipitation. Mentha piperita is the above-ground part of the plant Mentha piperita of the Lamiaceae family. It has the effect of dispersing wind-heat, clearing the head and eyes, clearing the throat, clearing the rash (clearing the throat, clearing the rash), and clearing the liver and promoting the flow of qi. It can be used to treat wind-heat colds, the first signs of warm diseases, wind-heat headache, red eyes and tears, sore throat, impenetrable measles, itchy rashes, liver stagnation and stagnation of qi, chest tightness and dystocia (pain in the area of the ribs). Peppermint is a volatile drug, boiling water after brewing need to cover the bottle, to avoid the active ingredients with the volatilization, let it stand for 5 minutes can help the efficacy of the drug to play effectively. After brewing, you can drink the mint water as needed. Menthol is not suitable for those who are weak and sweaty, and the adverse effects of menthol are uncertain, so it is recommended to take the drug under the guidance of a professional doctor.