Helping your patients to use their medications safely and appropriately is a critical aspect of clinical practice, but it can be challenging. The published literature on the topic of adherence is vast, and constantly growing and evolving. It is not feasible, nor necessarily helpful, to comprehensively summarize all the available evidence. Instead, this book aims to provide all health professionals with a succinct and handy resource on medication adherence. Importantly, the book focuses on practical information that can inform, and be applied in, day-to-day clinical practice.