Modern insulins are engineered analogues of the human hormone, redesigned so they are absorbed at a predictable speed. Long-acting (basal) insulins give a flat background level lasting a day or more. Rapid-acting (bolus) insulins are taken at meals to cover the glucose spike from food. Most people with type-1 diabetes use both, and the practical differences between products come down to how long they last and how steady they are.
Class descriptions are written by the Priya Life Science editorial team. Individual drug pages combine that summary with live label, approval, manufacturer and shortage data from the U.S. FDA via the openFDA API. This page is general information and is not medical advice — it is not exhaustive, drugs within a class are not automatically interchangeable, and approvals and brand names differ between the US, EU/Ireland (EMA/HPRA) and other regions. Always consult the official prescribing information and your clinician or pharmacist. Related: Drug Shortages Tracker · FDA Approvals · All drug comparisons