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.
The facts on this page are pulled directly from official U.S. FDA datasets — they are not written from memory. Each field below names the dataset it came from, so you can check it yourself.
Plain-English summaries and drug-class explainers are written and reviewed by the Priya Life Science editorial team, led by Sreepriya Prasannan (MSc Digital Transformation of Life Sciences (Innopharma Education / Griffith College); MSc & BSc Botany). Data is retrieved automatically from the sources above and cross-checked with AI-assisted verification (Anthropic's Claude) — brand and generic names are matched against the exact FDA product record so that a combination product or a different formulation cannot be mistaken for the drug on this page. An editor reviews the result before publication. We describe this in full in our editorial standards and corrections policy. The FDA data on this page was last retrieved on 10 Aug 2026.