Select language:
On this page

    Last updated: September 2023


    Prescription under medical supervision


    Therapeutic action

    • Long-acting steroidal anti-inflammatory drug (corticosteroid)


    • Symptomatic treatment of severe allergic and inflammatory reactions 

    Forms and strengths

    • 2 mg and 4 mg tablets

    Dosage and duration

    Dosage varies according to indication, reaction severity and clinical response:

    • Child: 0.15 to 0.6 mg/kg (max. 16 mg) once daily
    • Adult: 0.5 to 24 mg (max. 40 mg) once daily

    Duration varies according to indication. Due to dexamethasone’s long half-life, a treatment of 1 or 2 days is usually sufficient in asthma or croup. In the event of treatment longer than 10 days, decrease doses gradually to avoid adrenal suppression.

    Contra-indications, adverse effects, precautions

    • In case of systemic infection, only administer if patient is under antimicrobial treatment.

    • May cause (if prolonged treatment with high doses): adrenal suppression, muscle atrophy, growth retardation, increased susceptibility to infections, sodium and water retention (oedema and hypertension), osteoporosis, hypokalaemia, digitalis toxicity due to potassium loss in patients taking digitalis glycosides.

    • Pregnancy and breast-feeding: no contra-indication; use the lowest effective dose.


    • 0.75 mg of dexamethasone has the same anti-inflammatory activity as 5 mg of prednisolone or prednisone and 20 mg of hydrocortisone.


    –  Below 25 °C