Summary of CO2e (kg) categories by inhaler type
| Inhaler | CO2e kg/inhaler*† | Actuations per inhaler |
| Small-volume SABA (Salamol) | 9.870* | 200 |
| Large-volume SABA (VENTOLIN) | 25.260* | 200 |
| SAMA (Atrovent) | 14.590* | 200 |
| LABA (Salmeterol) | 17.300* | 120 |
| ICS (Clenil) | 20.350* | 200 |
| HFA-134a ICS/LABA | 19.650* | 120 |
| HFA-227ea ICS/LABA | 36.500* | 120 |
| RELVAR ELLIPTA‡ | 0.800† | 30 |
| VENTOLIN ACCUHALER (DISKUS)§ | 0.600† | 60 |
*Wilkinson et al.5
†Janson et al.11
‡All maintenance dry powder inhalers (ELLIPTA plus others) were categorised as having CO2e kg/pack of 0.8.
§All rescue medication dry powder inhalers were categorised as having CO2e kg/pack of 0.6.
CO2e, carbon dioxide equivalent; HFA, hydrofluoroalkane; ICS, inhaled corticosteroid; LABA, long-acting beta2-agonist; SABA, short-acting beta2-agonist; SAMA, short-acting muscarinic antagonist.