Dexamethasone injection is a kind of adrenocorticotropic hormone drugs, for different diseases, different groups of people, its route of administration, dosage and role also vary, can be injected intravenously, also through intravenous drip, nebulized inhalation, intra-articular cavity injections, intramuscular injections to carry out treatment. 1. Route of administration: Dexamethasone Injection can be injected intravenously, intra-articularly or intramuscularly. 2. Dosage: The dosage of Dexamethasone Injection is generally: intravenous injection, 2-20MG each time; drip should be diluted with 5% dextrose injection, can also be combined with other drugs, the specific use of the patient’s condition and follow the doctor’s instructions. 3. Dexamethasone injection has a certain anti-inflammatory effect: inhibit the phagocytosis of leukocytes, effectively reduce inflammation; dexamethasone injection has a certain anti-allergic effect: due to drug-induced allergies, you can use dexamethasone injection, which can effectively alleviate the anti-allergic reaction. Targeted diagnosis and treatment should be carried out under the guidance of doctors. Do not self-medicate. Overdose of this drug will cause adverse reactions such as edema, fatness and yellowish color.