Respiratory inhalers and the environment.

BACKGROUND
Several million inhalers are used annually by the millions of Australians with respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). Prescriptions in primary care tend to be for pressurised metered-dose inhalers (pMDIs), and consumers can purchase pMDI salbutamol over the counter. These inhalers contain potent greenhouse gases.


OBJECTIVE
This article briefly summarises the scale of the problem caused by pMDI propellants before discussing options available to general practitioners to mitigate their environmental impact while maintaining high-quality patient care.


DISCUSSION
The best inhaler for any patient is one that they can and will use as prescribed. However, for many people with chronic airways diseases, the environmental impact of their inhalers can be considered when doctors make prescribing choices, at least until newer, more climate-friendly propellants are introduced. Other aspects of asthma and COPD management that minimise environmental impact are also important.