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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
Auto-calculated: Step days evenly distributed to hit target duration.
Single dose rounding precision for realistic administration.
Generated Schedule
Calculated in 1.0 mg rounding increments
Estimated Cumulative Dose
-- mg
| Timeline | Total Daily | Instructions | # of Days |
|---|---|---|---|
| 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.