Albuterol Dosing for Acute Asthma Exacerbations

Introduction to Albuterol Dosing

The American Academy of Allergy, Asthma, and Immunology recommends albuterol administration via nebulizer at 2.5-5 mg every 20 minutes for 3 doses, then 2.5-10 mg every 1-4 hours as needed; or via MDI at 4-8 puffs every 20 minutes for 3 doses, then every 1-4 hours as needed for acute asthma exacerbations 1, 2

For adults, the recommended nebulizer dosing is 2.5-5 mg every 20 minutes for 3 doses, then 2.5-10 mg every 1-4 hours as needed 1, 2
For continuous nebulization in severe cases, the recommended dose is 10-15 mg/hour 1
For children ≥12 years, the same adult dosing is recommended 1
For children <12 years, the recommended dose is 0.15 mg/kg (minimum dose 2.5 mg) every 20 minutes for 3 doses, then 0.15-0.3 mg/kg up to 10 mg every 1-4 hours as needed 1

For adults and children ≥12 years, the recommended MDI dosing is 4-8 puffs every 20 minutes for up to 4 hours, then every 1-4 hours as needed 1, 2
For optimal delivery, a valved holding chamber (VHC) should be used 1
For children <12 years, the recommended dose is 4-8 puffs every 20 minutes for 3 doses, then every 1-4 hours as needed 1
For children <4 years, a VHC and face mask should be used 1

For nebulizer delivery, aerosols should be diluted to a minimum of 3 mL at a gas flow of 6-8 L/min 1
Large volume nebulizers should be used for continuous administration 1
For MDI, in mild-to-moderate exacerbations, MDI plus VHC is as effective as nebulized therapy with appropriate administration technique 1, 2

For severe exacerbations, consider adding ipratropium bromide to albuterol therapy 1, 2
For life-threatening exacerbations, consider intravenous magnesium sulfate (2 g over 20 minutes in adults; 25-75 mg/kg up to 2 g in children) 1
Levalbuterol can be administered in one-half the mg dose of albuterol for comparable efficacy and safety 1, 3
For MDI, follow the same dosing pattern as albuterol MDI 3
For nebulization, the recommended dose is 1.25-2.5 mg every 20 minutes for 3 doses, then 1.25-5 mg every 1-4 hours as needed 1

Monitor for side effects including tachycardia, tremor, and hypokalemia, especially with frequent or high-dose administration 4