As part of a person-centred review when optimising treatment, consider the opportunity for using a more carbon friendly inhaler.

During the review, prescribers should use their judgement and consider the following:

  • aim for the lowest GWP where possible, for example, a DPI or SMI
  • switching stable patients from pMDI to DPI for SABA inhalers, where the individual is co-prescribed a DPI combination inhaler6
  • using combination inhalers in place of separate inhalers to reduce the quantity of inhalers and GWP
  • poor control may be due to poor inhaler technique, and if this is a pMDI, then a change to a DPI or SMI may help improve control. Ensure that inhaler technique is taught and checked


See the section on DPI's for consideration of when it may or may not be suitable.