Pre-Basal Insulin Analog Era: Paving the Way for Modern Day Basal Insulins.

Prior to the discovery of insulins, diabetes was managed predominantly by dietary interventions. Discovery of insulin and its first human trial highlighted the need for higher purity insulin thereby steering the subsequent journey of insulin development. Considering the limitations of the early preparations like short duration of action and need for several injections per day, attempts at protracting the duration of insulin action were made.