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powder inhalers (= dry powder inhaler, DPI), which contain the active ingredient in powder form, and metered dose inhalers (DA). The latter use propellants to transport the active ingredient into deep sections [...] strong greenhouse gases and therefore have a very high potential to damage the atmosphere. In total, metered dose inhalers are responsible for 3.5% of the greenhouse gas emissions of the entire British healthcare [...] inhalers is possible and feasible for most people. Knowledge of the climate-damaging effects of metered dose inhalers and the possible (more environmentally friendly) alternatives is not yet widespread