Ice tablet can be powdered and added into pills and powder for internal use, and can also be powdered and applied externally. Ice tablets can be taken internally to open the brain orifices and clear the mind, treating dizziness and headache caused by excessive liver fire, phlegm and heat clouding the orifices (clouding the orifices of the mouth, eyes, nose, ears, etc.), and delirium. Applied externally, it can clear heat and detoxification (removing heat and toxicity from the body), and is used for mouth ulcers, water and fire burns, swollen eyes and other conditions. Because ice tablet is easy to volatilize, it is usually taken internally such as pills, powder directly swallowed, not added to the water decoction to take. Externally, it is powdered and applied with water, or sprinkled directly on the wound. Adverse effects are not clear, pregnant women and people with deficiency symptoms should be cautious. Ice tablet is a traditional Chinese medicine, it is recommended to be used under the guidance of a traditional Chinese medicine practitioner, unauthorized use of medication may cause adverse consequences.