Dexamethasone IV is also possible, but with certain prerequisites. Dexamethasone is a corticosteroid used to treat inflammation of the skin, joints, lungs, and other organs. Common conditions treated include asthma, allergies, and arthritis. It is also used for other conditions such as blood disorders and adrenal gland disorders. Dexamethasone may be given intravenously when it cannot be taken by mouth or when a very rapid response is needed, especially in patients with serious medical conditions. Adverse reactions such as stomach upset, heartburn, headache, difficulty sleeping, increased appetite or pain at the injection site, redness, swelling, slowed heart rate, low heart rate decreased blood pressure, and shortness of breath may occur with this medication. The drug is contraindicated in patients who are allergic to adrenocorticotropic hormone drugs; history of severe psychiatric disorders; active gastric and duodenal ulcers. Patients are advised to use the drug as prescribed by the doctor and inform the doctor promptly in case of adverse reactions.