Ineffective inhaler technique is a common problem that can lead to poor disease management and an increase in the frequency of exacerbations. It is not always down to patients choosing to use inhalers in an inappropriate way, as evidence suggests health professionals are often found to be lacking in their ability to correctly teach inhaler technique. This article looks at the evidence regarding incorrect use of inhalers and the common themes associated with poor technique. It also provides a step-by-step guide on appropriate use of the more commonly prescribed inhalers.