The UK has some of the worst asthma outcomes in Europe with a rise in asthma deaths over the last decade. We are also increasingly aware of the high environmental impact of some asthma inhalers. At first, it may seem that improving either of these problems would be deleterious to the other, but in this NB Clinic, we will discuss new asthma guidance from Greener Practice, endorsed by Asthma UK, the British Lung Foundation and NHS England on how we can help both issues in a simple and mutually beneficial way.