A hundred years on: The role of human insulin.

There are multiple insulin preparations, and strengths, available in various delivery devices. Modern insulin analogues are characterised by better safety and tolerability, and are increasingly being used across much of the world. Does there still exist a role for human insulin? This brief communication explores the potential indications for human insulin, while discussing the concerns and caveats related to its use, and suggesting ways of safe and smart use of human insulin.