Medically reviewed by Drugs.com. Last updated on Jan 3, 2022.
Treatment should be instituted in a hospital until a stable dosage regimen is achieved. Therapy should be initiated with 250 mg orally four times daily, preferably at 6-hour intervals. Adrenocortical response should be followed by careful monitoring of plasma cortisol levels until the desired level of suppression is achieved. If the level of cortisol suppression is inadequate, the dosage may be increased in increments of 250 mg daily at intervals of 1-2 weeks to a total daily dose of 2 g. Dose reduction or temporary discontinuation of therapy may be required in the event of adverse effects, including extreme drowsiness, severe skin rash, or excessively low cortisol levels. If a skin rash persists for longer than 5-8 days or becomes severe, the drug should be discontinued. It may be possible to reinstate therapy at a lower dosage following the disappearance of a mild or moderate rash. Mineralocorticoid replacement (e.g., fludrocortisone) may be necessary. If glucocorticoid replacement therapy is needed, 20-30 mg of hydrocortisone orally in the morning will replace endogenous secretion.
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