Abstract
The carbon footprint of inhalers used by 1314 people with unconfirmed asthma waiting for a GP-requested methacholine test in one centre was estimated to be 22 tons CO(2)e. Solutions include ↓BPT wait-time (↓72% CO(2)e) and switching MDI to DPI (↓81% CO(2)e) https://bit.ly/4dxP7Pd.