The importance of understanding user needs has been widely acknowledged by consultants, regulators and patients themselves alike to be an extremely critical input to the development process. But sometimes it’s not all that easy to identify and prioritise user needs and ensure that they drive relevant decisions throughout the development of a drug delivery device. Carolyn Rose and Gregoire Gauthier from the Insight Innovation Centers of Nemera examine the nuances that help ensure success when considering the impact of user needs on product design in their innovative interview-led piece.