Dispense Quantity for Symbicort 2 Puffs Twice Daily
For a patient using Symbicort 2 puffs twice daily (4 puffs per day), dispense one 120-actuation inhaler, which provides a 30-day supply.
Calculation and Rationale
The standard Symbicort inhaler contains 120 actuations (metered doses) 1. With a dosing regimen of 2 puffs twice daily:
- Daily usage: 4 puffs
- Days per inhaler: 120 ÷ 4 = 30 days
- Standard dispense: 1 inhaler per month
Dosing Context from FDA Label
The FDA-approved dosing for Symbicort varies by indication 1:
- Asthma maintenance: Symbicort 160/4.5 mcg, 2 inhalations twice daily is a standard maintenance dose
- COPD: Same dosing (2 inhalations twice daily) is approved for chronic obstructive pulmonary disease
Important Dispensing Considerations
For SMART (maintenance and reliever) therapy: If the patient is using Symbicort as both maintenance AND as-needed reliever therapy, you must account for additional usage 2, 3:
- Maintenance: 2 puffs twice daily (4 puffs baseline)
- Plus as-needed use: up to 8 additional puffs daily
- Maximum total: 12 puffs per day for adults 2
- In this scenario, dispense 2 inhalers per month to ensure adequate supply
Standard fixed-dose therapy: For patients using Symbicort only as scheduled maintenance (with a separate rescue inhaler like albuterol), 1 inhaler per 30 days is appropriate.
Practical Dispensing Algorithm
Verify the regimen: Is this maintenance-only or SMART therapy?
- Maintenance only → 1 inhaler/30 days
- SMART (maintenance + reliever) → 2 inhalers/30 days
Check the strength: Symbicort comes in 80/4.5 mcg and 160/4.5 mcg
- Both contain 120 actuations
- Dosing is typically "2 puffs twice daily" regardless of strength
Counsel on inhaler counter: Patients should discard the inhaler when the counter reads "000" even if it continues to spray 1