Demi is dexamethasone acetate tablets, fever reducing onset of action in about 15 minutes, the peak plasma concentration of dexamethasone occurs in 15 minutes to 2 hours after the drug is administered, and it can take effect after 15 minutes after the drug is administered. Dexamethasone is a long-acting glucocorticoid with anti-immune, anti-inflammatory and anti-shock effects, and is mainly used in allergic and autoimmune inflammatory diseases. Such as connective tissue disease, severe bronchial asthma, dermatitis and other allergic diseases, ulcerative colitis, acute leukemia, malignant lymphoma, etc., usually not recommended for antipyretic treatment. It is contraindicated in patients with hypertension, thrombosis, gastric and duodenal ulcers, psychosis, electrolyte metabolism abnormalities, myocardial infarction, visceral surgery, glaucoma, etc., and is contraindicated in patients with hypersensitivity to adrenocorticotropic hormone drugs. Large doses of this product is prone to cause diabetes, peptic ulcer and other adverse reactions, as well as inhibitory effect on the hypothalamic-pituitary-adrenal axis. It may also complicate infections and other adverse reactions. Dexamethasone should be used with caution and is recommended to be used with caution under the supervision of a physician.