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Dexamethasone Taper Calculator
Generate an optimized step-down schedule based on current regimen and target duration.
Taper Parameters
mg
days
Total desired length of the taper.
days
How many days to hold each dose before dropping.
Generated Schedule
Calculated in 0.5 mg rounding increments
Estimated Cumulative Dose
-- mg
| Timeline | Total Daily | Instructions |
|---|---|---|
| Enter current dose and duration to generate taper schedule. | ||
Principles of Glucocorticoid Tapering
The primary goals of tapering glucocorticoids are to prevent withdrawal syndrome, avoid relapse of the underlying disease being treated, and allow the hypothalamic-pituitary-adrenal (HPA) axis to recover from suppression.
When to Taper
- Short Courses (< 2-3 weeks): Generally do not require a taper to prevent HPA axis suppression. Rapid tapers may be used solely to prevent disease flare.
- Chronic Therapy (> 3 weeks): Gradual tapering is required. A common approach is a 10% to 20% dose reduction every 1 to 2 weeks.
- Patient Factors: Frail patients or those reporting severe withdrawal symptoms (fatigue, joint pain) may require longer step intervals (e.g., drops every 7-14 days).
Dexamethasone Specifics
- Long Half-Life: Dexamethasone has a biologic half-life of 36 to 72 hours, meaning daily dosing provides continuous HPA suppression.
- Potency: It is approximately 25 to 30 times more potent than endogenous cortisol.
- Physiologic Dose: ~0.5 to 0.75 mg/day is equivalent to normal physiologic cortisol production. When the taper reaches this level, some clinicians transition to a shorter-acting steroid (e.g., Hydrocortisone) to fully assess and allow HPA recovery.
References
- Fauci AS, et al. Glucocorticoid withdrawal. In: UpToDate, Post TW (Ed), UpToDate, Waltham, MA.
- Hopkins RL, Leinung MC. Exogenous Corticosteroid Therapy and Hypothalamic-Pituitary-Adrenal Axis Suppression. Clin Ther. 2005;27(1):140-153.