Individualized dosage. 
Bronchial asthma Adult & childn ≥12 yr Initially 1-2 mg twice daily. Maintenance: 0.5-1 mg twice daily. 
Childn 3 mth-12 yr Initially 0.5-1 mg twice daily. Maintenance: 0.25-0.5 mg twice daily. 
Acute laryngotracheobronchitis (croup) Infant & childn 2 mg of nebulised as single administration. 
Acute exacerbations of asthma Adult  4-8 mg divided into 1-4 administrations. May be further increased in very severe cases. Max: 4 mg at one occasion. Can be continued until clinical improvement, max 10 days. 
Childn (6 mth-17 yr) 1.5-4 mg, up to 6 mg in childn ≥5 yr. Daily dose can be divided into 1-4 administrations. Max: 3 mg at one occasion. Can be continued until clinical improvement, max 10 days. 
Exacerbations of COPD 4-8 mg divided into 2-4 administrations, until clinical improvement, but max 10 days.