NCT07825441Completed
RandomisED Control Trial to Understand Whether Prescribing Choice for inhalErs is Influenced by Knowledge of the CARBON Footprint (REDUCE Carbon)
Source: ClinicalTrials.gov · Last updated 17 Sept 2026
Brief summary (registry, in English)
Climate change is a huge and present threat, with the devastating effects being increasingly seen in everyday life. The NHS contributes substantially to the UKs carbon footprint with an estimated 23 million tonnes gCO2Eq per year, 3% of which comes from pMDIs. There are a number of alternative inhalers, such as DPIs, which do not use propellant and therefore have a significantly lower carbon footprint. There is a call to move towards greener inhalers as part of the NHS long term plan for sustainability, to reduce the carbon footprint and therefore the environmental impact and help protect the health of our patients today and in the future. When recommending an inhaler, a number of factors are usually considered including the ability of the patient to use the device and its cost. Up until now the environmental impact of each inhaler is not routinely available and therefore is not normally considered in prescription choice. Given the increasing evidence supporting the sizeable impact that pMDIs are having on global warming, there needs to be a shift in practice where the climate impact forms part of the decision-making process. This study is looking to explore prescribing behaviours surrounding inhaler selection and in particular whether knowledge of the carbon footprint of inhalers has any sway on prescribing preference. By better understanding the decision-making process, this will allow the production of more comprehensive asthma management guidelines and potentially facilitate a drive to greener inhaler prescribing practices.
- Status (registry)
- Completed
- Study type
- Interventional
- Enrollment
- 3782 (actual)
- First submitted
- 19 Aug 2026
- Start date
- Mar 2022
- Primary completion date
- Aug 2025
- Lead sponsor
- Portsmouth Hospitals NHS Trust
- Diseases
- Asthma
- NCT number
- NCT07825441
What you commit to
- Study type: Interventional
- Participants enrolled: 3782
- From Mar 2022 to the primary completion date, Aug 2025
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other
- Inability to understand or comply with study procedures and/or inability to give fully informed consent.
Who the study is looking for
- Aged ≥18 years
- Working as an HCP within the NHS in a primary or secondary care setting
- Able to provide written e-consent
- Able to understand and complete the clinical case scenarios
Age in the registry: 18 years to - · Sex: All · Accepts healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Portsmouth Hospitals University NHS Trust, Research Department Coordinator of this site? Confirm its status | Portsmouth | United Kingdom | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.