Dexamethasone Tablets Generic Name & Formulations
Legal Class
Rx
General Description
Dexamethasone 0.5mg, 0.75mg, 4mg, 6mg; tabs.
Pharmacological Class
Glucocorticoid.
How Supplied
Contact supplier
Manufacturer
Mechanism of Action
Naturally occurring glucocorticoids, (hydrocortisone and cortisone), which also have salt-retaining properties, are used as replacement therapy in adrenocortical deficiency states. Their synthetic analogs, including dexamethasone, are primarily used for their potent anti-inflammatory effects in disorders of many organ systems.
Dexamethasone Tablets Indications
Indications
Steroid-responsive disorders.
Dexamethasone Tablets Dosage and Administration
Adult
See full labeling. Initially 0.75–9mg daily.
Children
See full labeling. Initially 0.02–0.3mg/kg/day in 3–4 divided doses.
Dexamethasone Tablets Contraindications
Contraindications
Systemic fungal infection. Live vaccination.
Dexamethasone Tablets Boxed Warnings
Not Applicable
Dexamethasone Tablets Warnings/Precautions
Warnings/Precautions
Cerebral malaria, optic neuritis, active ocular herpes simplex: not recommended. Strongyloides infestation. Tuberculosis. Exclude latent or active amebiasis prior to initiation in patients with unexplained diarrhea or traveled to the tropics. If exposed to chickenpox or measles, consider prophylactic passive immune therapy. Recent MI. CHF. Hypertension. Renal insufficiency. Peptic ulcers. Diverticulitis. Intestinal anastomoses. Ulcerative colitis. Cirrhosis. Postmenopausal women (osteoporosis risk). Diabetes. Thyroid disorder. Myasthenia gravis. Supplement with additional steroids in physiologic stress. Avoid abrupt cessation. Monitor thyroid, weight, growth, fluid, electrolyte balance and intraocular pressure (w. therapy >6wks). Elderly. Pregnancy (Cat.C). Nursing mothers: not recommended.
Dexamethasone Tablets Pharmacokinetics
Elimination
Renal. Half-life: 6.6±4.3 hours.
Dexamethasone Tablets Interactions
Interactions
Potentiated by CYP3A4 inhibitors (eg, ketoconazole, clarithromycin, erythromycin, ritonavir, cobicistat-containing products), cyclosporine, estrogens. Antagonized by CYP3A4 inducers (eg, barbiturates, phenytoin, carbamazepine, rifampin), ephedrine. May be antagonized by cholestyramine. May potentiate cyclosporine. May antagonize anticoagulants (monitor), isoniazid, other CYP3A4 substrates (eg, indinavir, erythromycin). Aminoglutethimide may diminish adrenal suppression by corticosteroids. Increased risk of arrhythmias with digitalis. May need to adjust dose of antidiabetic agents. Increased GI effects with aspirin or other NSAIDs. Monitor for hypokalemia with potassium-depleting drugs (eg, amphotericin B, diuretics). Toxic epidermal necrolysis possible with thalidomide. Concomitant indomethacin: may get false-negative on dexamethasone suppression test. May suppress reactions to skin tests.
Dexamethasone Tablets Adverse Reactions
Adverse Reactions
HPA axis suppression, masks infection, increased susceptibility to infection, glaucoma, cataracts, secondary infections, hypokalemia, hypocalcemia, hypernatremia, hypertension, psychic disorders, myopathy, osteoporosis, peptic ulcer, dermal atrophy, increased intracranial pressure, hyperglycemia.
Dexamethasone Tablets Clinical Trials
See Literature
Dexamethasone Tablets Note
Notes
Formerly known under the brand name Decadron.