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Table 54.1

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   Relative Potencies and Equivalent Dose of Corticosteroids

CompoundRelative Anti-inflammatory potencyRelative Sodium-Retaining PotencyDuration of Action*Approximate Equivalent Dose (mg)
Cortisol11S20
Cortisone0.80.8S25
Corticosterone0.415S
Fludrocortisone10125S
Prednisone40.8I5
Prednisolone40.8I5
6a-methylprednisolone50.5I4
Triamcinolone50I4
Paramethasone100L2
Betamethasone250L0.75
Dexamethasone250L0.75
Deoxycorticosterone0.2100
Aldosterone0.33000
*

S = short or 8- to 12-h biologic half-life; I = intermediate or 12- to 36-h biologic half-life; L = long or 36- 72-h biologic half-life (see Rose and Saccar 230).

These dose relationships apply only to oral or intravenous administration; relative potencies may differ greatly when injected intramuscularly or into joint spaces. From Haynes and Murad.229